Re: [algogeeks] constructor ques

2011-08-22 Thread coder dumca
@sukran ur r wrong man
the construdor of virtual base class are called first  otherwise it is from
left to right
so the correct order is
D A B C Z
On Mon, Aug 22, 2011 at 8:25 AM, Sanjay Rajpal srn...@gmail.com wrote:

  agree with sukran.


 Sanju
 :)



 On Mon, Aug 22, 2011 at 8:20 AM, sukran dhawan sukrandha...@gmail.comwrote:

 its left to right always !


 On Mon, Aug 22, 2011 at 8:49 PM, Sanjay Rajpal srn...@gmail.com wrote:

  A
 B
 C
 D


 Sanju
 :)



 On Mon, Aug 22, 2011 at 8:17 AM, sivaviknesh s 
 sivavikne...@gmail.comwrote:

 you have 4 classes A,B,C,D and class Z is derived from all these classes

 using
 Class Z: public A,private B,Protected C, Virtual D
 What is the order of constructor call?

 ...plz reason out also

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Re: [algogeeks] Important

2011-08-22 Thread coder dumca
hi manglu

On Mon, Aug 22, 2011 at 7:05 AM, Mangal Dass mangaldass1...@gmail.comwrote:

 Anybody pls tell me the questions coming into Information-Mosaic campus
 test.
 Mosaic has changed its pattern.
 Pls post both the pattern as well as questions(if something u remembered) .

 Thanks a lot,

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Re: [algogeeks] Re: Longest palindrome

2011-08-22 Thread coder dumca
@ harry how it is possible man

On Mon, Aug 22, 2011 at 3:58 AM, WgpShashank shashank7andr...@gmail.comwrote:

 Hey Geeks I think question can be solved by many ways . some of the
 algorithms are i have implemented  aware of are -

 1st. Algo
  Generate all palindromes (even  odd length ) of given string while keep
 tracking of their length in last just compare max (evenlength_palindrome ,
 oddlength_palindrome) .
  Time Complexity O(N^2) where N is length of String

 2nd . Algo. For Those Who are just saying Use DP :)
   Find The LCS(Longest Common Sub-sequence of String (say s1) reverse of
 String (say s2) ) It Involves
   DP to solve efficiently but guaranteed optimal solution
   Time Complexity O(N^2) where N is length of String
   Space  Complexity O(N^2)  for table

 3rd. Use Suffix Tree ( Need to Work On It)  basic idea is to build the
 suffix tree of string  reverse string check no every node where suffix
 belongs to , the deepest common node will us longest palindrome in given
 string.

 Correct me if i missed something ?

 Thanks
 Shashank Mani
 Computer Science
 Birla Institute of Technology ,Mesra

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Re: [algogeeks] Re: Microsoft written!!!

2011-08-10 Thread coder dumca
apply BFS
the node after the particular node(whode cousin to be find) will be the
required node

On Wed, Aug 10, 2011 at 2:15 PM, Puneet Chawla puneetchawla...@gmail.comwrote:


 Agree with mohit goel..

 On Wed, Aug 10, 2011 at 11:22 AM, Mohit Goel mohitgoel291...@gmail.comwrote:

10
  4  5
2  7  6 11
1 39   8 12  13   14   15


 i think we should first  find the parent of the particular node ..then
 apply the concept as told by Brijesh on it 

 p =parent(q);
 r = parent(p);
 count =1;
 while(p ==isright(r))
 {
 p=r;
 r=parent(r);
 count++;
 if(r==root)
 break;

 }

 if(d =right(r))
 {
 while(count!=0)
 {
 if(d-left)
 d=d-left;
 else d=d-right;
 count--;
 }
 }
 else return NULL;
 o/p=d-value;



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 Puneet Chawla
 Computer Engineering Student
 NIT Kurukshetra

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Re: [algogeeks] Re: Probability Puzzle

2011-08-08 Thread coder dumca
it's 3/5

On Tue, Aug 9, 2011 at 8:29 AM, Dave dave_and_da...@juno.com wrote:

 @Dipankar: You are correct about the answer to your alternative
 question being 17/80, but your answer 3/5 says that you don't think
 you have learned anything by the five heads flips. Don has given a
 good explanation as to why the answer is 17/18, but you apparently
 refuse to accept it. There is none so blind as one who will not see.

 Dave

 On Aug 8, 9:26 pm, Dipankar Patro dip10c...@gmail.com wrote:
  3/5.
 
  As the question doesn't ask anything about the sequence.
  Had the question been  Find the probability that all 6 are H  then it
  would have been 17/80.
 
  On 9 August 2011 04:07, Dave dave_and_da...@juno.com wrote:
 
 
 
 
 
   @Vinay: What if you tossed 100 consecutive heads? Would that be enough
   to convince you that you had the double-headed coin? If so, then
   doesn't tossing 5 consecutive heads give you at least an inkling that
   you might have it? Wouldn't you then think that there would be a
   higher probability of getting a head on the sixth toss than there was
   on the first toss (3/5)? Don's conditional probability answer 17/18 is
   the right answer.
 
   Dave
 
   On Aug 8, 5:04 pm, vinay aggarwal vinayiiit2...@gmail.com wrote:
answer should be 3/5
think like that tossing 5 times will not help you predict the outcome
of sixth toss. Therefore that information is meaningless.
 
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Re: [algogeeks] max product!

2011-08-07 Thread coder dumca
1: choose 4 biggest numbers  with abs value
following situations will arise
1: all 4 numbers are +ve  then choose the biggest 3
2: 1 -ve3 +ve  choose 3 positive numbers
3: 3 -ve1 +ve   choose  2 -ve(with largest abs value)  and 1 +ve
4: 2 +ve   2 -ve choose accordingly
4 all are -ve  choose 2 -ve(with largest abs value)  and scna the arry to
finf largest +ve int

pls let me know if i m wrong

On Sun, Aug 7, 2011 at 6:09 AM, Nikhil Veliath nve...@gmail.com wrote:

 given an array that has n nos . . . . find the maximum product of 3
 nos and display the 3 nos . . .

 25 9 6 8 -20 -5 -10

 so
 max product 5000

 the nos are -20 -10 25

 give an O(n) solution and if possible try avoid using sort

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Re: [algogeeks] MICROSOFT INTERVIEW QUESTIONS faced by my frenz nd me

2011-08-07 Thread coder dumca
in qyes no 9  I think none of options are correct

On Sun, Aug 7, 2011 at 8:25 AM, ankit sambyal ankitsamb...@gmail.comwrote:

 Can anybdy explain the following questions :
 (5)  Find the output
 int arr[2][3]={{1,2,3},{4,5,6}};
 int (*ptr)[3]=a[0];
 printf((%d,%d),(*ptr)[1],(*ptr)[2]);
 ptr+=1;
 printf((%d,%d),(*ptr)[1],(*ptr)[2]);

Will this program compile properly or will end in segmentation
 fault ??


  (9) Given a inorder traversal eg 1 2 3 4 5 6 7 8 9 , Check which of
 the following preorder traversal will it return .
a.1 6 3 2 7 8 4 9
b.6 7 3 8 1 9 2 7
c,2 4 6 8 1 3 5 7
d.1 3 5 7 2 4 6 8

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Re: [algogeeks] MICROSOFT INTERVIEW QUESTIONS faced by my frenz nd me

2011-08-07 Thread coder dumca
inoeder traversal is given 1 2 3 4 5 6 7 8 9
in preorder traversal  root come fist , then left and then right.
see the option
  a.1 6 3 2 7 8 4 9

1 is root at left there is 6 , sine  left child must be smaller than root

in this way none of options are satisfying this
   b.6 7 3 8 1 9 2 7   6  is roor but 7 is greater
   c,2 4 6 8 1 3 5 7
   d.1 3 5 7 2 4 6 8

i think the is some fault in the question it should  post order to find
On Sun, Aug 7, 2011 at 11:38 AM, ankit sambyal ankitsamb...@gmail.comwrote:

 @coder : Cud u plz explain the approach for question 9 ??

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Re: [algogeeks] MICROSOFT INTERVIEW QUESTIONS faced by my frenz nd me

2011-08-07 Thread coder dumca
oh soory

On Sun, Aug 7, 2011 at 12:02 PM, Neha Sharan neharick...@gmail.com wrote:

 @coder: it is not bst.


 On Mon, Aug 8, 2011 at 12:15 AM, coder dumca coder.du...@gmail.comwrote:

 inoeder traversal is given 1 2 3 4 5 6 7 8 9
 in preorder traversal  root come fist , then left and then right.
 see the option
a.1 6 3 2 7 8 4 9

 1 is root at left there is 6 , sine  left child must be smaller than root

 in this way none of options are satisfying this
b.6 7 3 8 1 9 2 7   6  is roor but 7 is greater
c,2 4 6 8 1 3 5 7
d.1 3 5 7 2 4 6 8

 i think the is some fault in the question it should  post order to find
   On Sun, Aug 7, 2011 at 11:38 AM, ankit sambyal 
 ankitsamb...@gmail.comwrote:

 @coder : Cud u plz explain the approach for question 9 ??

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[algogeeks] finding triplets

2011-08-06 Thread coder dumca
given an array , find three  numbers a,b and c such that a^2+b^2=c^2   in
o(n^2)

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Re: [algogeeks] Query to find the Nth highest salary in employee table

2011-08-06 Thread coder dumca
select top 1 salary from(select top 6   salary from employee
order by salary desc)asc

On Sat, Aug 6, 2011 at 6:40 PM, Reynald reynaldsus...@gmail.com wrote:

 Could anyone please explain me how this query selects the employee
 with nth highest salary?

 select last_name, salary from employees e1
 where n = (select count(distinct(salary)) from employees e2
 where e2.salary = e1.salary);

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Re: [algogeeks] Re: Microsoft :)

2011-08-06 Thread coder dumca
congrats man

On Sat, Aug 6, 2011 at 5:14 AM, parag khanna khanna.para...@gmail.comwrote:

 congrats dude ... can u plz tell me the questions asked ... microsoft is
 visiting our campus on 29th

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Re: [algogeeks] size -------

2011-08-06 Thread coder dumca
on gcc it is 16 bytes  and  on dev cpp its  24  bytes

On Sat, Aug 6, 2011 at 11:10 AM, siddharth srivastava
akssps...@gmail.comwrote:



  On 6 August 2011 23:27, Nitin coolguyinat...@gmail.com wrote:

 I am also getting 24 bytes but y it is taking it every data type as 8,8,8
 as if we take it alone it is 1 for char and 4 for int and 8 for doble as it
 is giving 24 which means it is setting every data type as 8 bytes.


 it should be due to 64 bit machine (and I guess an appropriate compiler
 suiting the architecture)
 btw, what's your system architecture and compiler specifications ?




  On Sat, Aug 6, 2011 at 9:28 PM, Aditya Virmani virmanisadi...@gmail.com
  wrote:

 i guess it depends on ur system configuration...for 32 bit
 machines...respective sizes allocated would be 4,4,8 :giving 16
  on 64 bit machines it wud be 8,8,8: giving 24. Correct me if i am
 wrong.


 On Sat, Aug 6, 2011 at 9:24 PM, SANDEEP CHUGH 
 sandeep.aa...@gmail.comwrote:

 @ sukran , nitish :
 guys, i dnt knw about the output from these online compliers..


 On Sat, Aug 6, 2011 at 9:20 PM, SANDEEP CHUGH 
 sandeep.aa...@gmail.comwrote:


 @payel : according to u,,starting address cannot be 4.. ok.
 but wat if i hav used the following structure before that structure

 struct demo1
 {
 char a;
 int b;
 char c;

 }


  On Sat, Aug 6, 2011 at 9:06 PM, Nitish Garg nitishgarg1...@gmail.com
  wrote:

 Why does Ideone https://ideone.com/1Uwxx gives 16?

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Re: [algogeeks] Paypal interview Questions

2011-08-06 Thread coder dumca
default  arguments are added right to left  , in first one it is left to
right thats why error

On Sat, Aug 6, 2011 at 9:41 AM, siddharth srivastava akssps...@gmail.comwrote:

 Hi

  On 6 August 2011 12:08, swetha rahul swetharahu...@gmail.com wrote:

 Hi,

 Q.No:1
  what is wrong here
 void foo(int x=10,int y)
 how compiler will treat it??


 compiler error
 to get it working y should also have a default value.



 and what happen here
 void foo(int x=10,int y=20)


 will work fine


 Q.No:2
 How to remove duplicate elements from an array in just one pass.. Take
 care of time and space complexity..


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[algogeeks] finding triplets

2011-08-06 Thread coder dumca
given an array find all triplets such that a^2+b^2=c^2

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[algogeeks] probabilty

2011-08-05 Thread coder dumca
A man speaks truth 3 out of 4 times. He throws a die and reports it to be a
6.
What is the probability of it being a 6?

1 /2
3 /4
5 /8
1 /8

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Re: [algogeeks] probabilty

2011-08-05 Thread coder dumca
i think it should  be 3/4

On Fri, Aug 5, 2011 at 4:20 PM, aditi garg aditi.garg.6...@gmail.comwrote:

 1/8

 On Fri, Aug 5, 2011 at 4:14 PM, coder dumca coder.du...@gmail.com wrote:

  A man speaks truth 3 out of 4 times. He throws a die and reports it to
 be a 6.
 What is the probability of it being a 6?

 1 /2
 3 /4
 5 /8
 1 /8

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 Electronics  Communication Divison
 NETAJI SUBHAS INSTITUTE OF TECHNOLOGY
 Sector 3, Dwarka
 New Delhi


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Re: [algogeeks] latest google interview questions

2011-08-03 Thread coder dumca
abe tumhe to factory me data entry ki job bhi nahi milehi , bada aaya google
me interns lene wala.

On Tue, Aug 2, 2011 at 6:35 PM, tmdhat tmd...@gmail.com wrote:

 dude

 keep threads clean.
 and please don't feed the trolls.

 it's obviously an entire bullshit from the beginning,,,
 why feed the trolls?

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Re: [algogeeks] Help for Thoughworks

2011-08-03 Thread coder dumca
hi reynald i have send u some questions  on the group

On Wed, Aug 3, 2011 at 10:36 AM, Reynald Suz reynaldsus...@gmail.comwrote:

 Sorry for the typo, Its Thoughtworks


 On Wed, Aug 3, 2011 at 11:04 PM, Reynald reynaldsus...@gmail.com wrote:

 Hi folks!
  If any of you have Thoughworks flow questions, Coding rounds
 questions, Technical interview questions kindly please share. Thank
 you.

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Re: [algogeeks] oracle question

2011-08-03 Thread coder dumca
system call causes a mode switch mode changes fron user to kernal.

On Wed, Aug 3, 2011 at 7:07 AM, naveen ms naveenms...@gmail.com wrote:

 @rajeev and sourabh:..thanks a lot;...:)

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Re: [algogeeks] Aricent is coming..

2011-08-03 Thread coder dumca
hi abhishek i dont have sample paper but i can ive u overview of aricent.
1 round written  : logical reasioning , aptitude and c /c++/java

2 round technical interview  go for the basics

On Wed, Aug 3, 2011 at 12:22 PM, abhishek kumar 
mailatabhishekgu...@gmail.com wrote:

 hey guys..
 Aricent is visiting to our college on 22nd. will you provide me the pattern
 and sample papers..
 thanks in advance.

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[algogeeks] about thoughtworks

2011-08-02 Thread coder dumca
hi algogeeks
 can anybody tell mw  the interview process of thoughtworks, the
kind of question in written and about the company.

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Re: [algogeeks] Re: virtual functions output

2011-08-02 Thread coder dumca
yes shiva
 this is one of the way to call base class constructor, we usually use this
style when we pass some values to base class constructor,  otherwise  base
class constrictor are always  imlicitly.

On Tue, Aug 2, 2011 at 1:35 AM, siva viknesh sivavikne...@gmail.com wrote:

 how it ll simply call the  base class constructor ???

 As far as i know .

 if we give like.

 class abc
 {
  abc(int i){.}
 }
 class def : public abc
 {

   def(int i,int j):abc(i)

 {}

 // by using like this only u can call base class
 //constructor  no ???  ..correct me if i m wrong


 }

 On Aug 1, 11:04 pm, coder dumca coder.du...@gmail.com wrote:
  base class constructor are called before derived class construtors.
 
  Base* pBase = new Derived();  statement creates a derived class
  object hence calls derived class condstructor, which calls base call
  constructor. base class constructor calls fun()  which prints   Base
  Function.
 
  pls correct me  if i m wrong
  On Mon, Aug 1, 2011 at 9:37 AM, sivaviknesh s sivavikne...@gmail.com
 wrote:
 
 
 
 
 
 
 
 
 
#includeiostream
   #includestdio.h
 
   using namespace std;
 
   class Base
   {
   public:
 Base()
 {
   fun(); //note: fun() is virtual
 }
 virtual void fun()
 {
   cout\nBase Function;
 }
   };
 
   class Derived: public Base
   {
   public:
 Derived(){}
 virtual void fun()
 {
   cout\nDerived Function;
 }
   };
 
   int main()
   {
 Base* pBase = new Derived();
 delete pBase;
 
 getchar();
 return 0;
   }
 
   Output:
   *Base Function*
 
   See following excerpt from C++ standard
 http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1905.pdffor
 explanation.
 
   *When a virtual function is called directly or indirectly from a
   constructor (including from the mem-initializer for a data member) or
 from a
   destructor, and the object to which the call applies is the object
 under
   construction or destruction, the function called is the one defined in
 the
   constructor or destructor’s own class or in one of its bases, but not a
   function overriding it in a class derived from the constructor or
   destructor’s class, or overriding it in one of the other base classes
 of the
   most derived object.*
 
   Because of this difference in behavior, it is recommended that object’s
   virtual function is not invoked while it is being constructed or
 destroyed.
   See this
   
 https://www.securecoding.cert.org/confluence/display/cplusplus/OOP30-..
 .for
more details.
   ..CAN ANYONE GIVE A SIMPLE EXPLANANTION?? given explanation
 is
   quite confusing
 
   --
   Regards,
   $iva
 
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Re: [algogeeks] Max subarray of no 2 adjacent elements

2011-08-01 Thread coder dumca
this is the correct working code

#define size   8
void main()
{

int a[]={16,2,4,10,1,12,5,6};
int sum=0,i,index;

for(i=0;isize-1;)
{
   if(a[i]a[i+1])
{
 sum=sum+a[i];
  index=i;
   i=i+2;
}
   else
   {
  sum=sum+a[i+1];
  index=i;
   i=i+3;
   }

}

if(i-index1)
sum=sum+a[i];

printf(maximum sum is   %d,sum);
}




On Mon, Aug 1, 2011 at 1:39 PM, Abhishek Gupta gupta.abh...@gmail.comwrote:

 @Kartik

 we cant choose adjacent elements. for ex A={5,2,1,7,9,11} then we will have
 5+7+11
 can any one give any algo for this
 thank you


 On Mon, Aug 1, 2011 at 1:25 PM, kartik sachan kartik.sac...@gmail.comwrote:

 oh..got it i didn't read that statement:(

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 MCA
 NIT Calicut
 Kerela

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[algogeeks] need help

2011-08-01 Thread coder dumca
hi frnds
can any body tell me how a student can appear for amazon or microsoft , if
these comanies are not coming to the campus.

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Re: [algogeeks] Max subarray of no 2 adjacent elements

2011-08-01 Thread coder dumca
i think the answer should be 15

On Mon, Aug 1, 2011 at 12:46 PM, Abhishek Gupta gupta.abh...@gmail.comwrote:

 let the array be A={ 3,5,7,10} then it should give output as 13 (3+10)

 In short, we need to find the possible maximum sum such that no 2 elements
 in the subarray has 2 elements adjacent. there is no bound on the size of
 subarray.
 --
 Abhishek Gupta
 MCA
 NIT Calicut
 Kerela

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Re: [algogeeks] virtual functions output

2011-08-01 Thread coder dumca
base class constructor are called before derived class construtors.

Base* pBase = new Derived();  statement creates a derived class
object hence calls derived class condstructor, which calls base call
constructor. base class constructor calls fun()  which prints   Base
Function.


pls correct me  if i m wrong
On Mon, Aug 1, 2011 at 9:37 AM, sivaviknesh s sivavikne...@gmail.comwrote:


  #includeiostream
 #includestdio.h

 using namespace std;

 class Base
 {
 public:
   Base()
   {
 fun(); //note: fun() is virtual
   }
   virtual void fun()
   {
 cout\nBase Function;
   }
 };

 class Derived: public Base
 {
 public:
   Derived(){}
   virtual void fun()
   {
 cout\nDerived Function;
   }
 };

 int main()
 {
   Base* pBase = new Derived();
   delete pBase;

   getchar();
   return 0;
 }

 Output:
 *Base Function*

 See following excerpt from C++ 
 standardhttp://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1905.pdffor
  explanation.

 *When a virtual function is called directly or indirectly from a
 constructor (including from the mem-initializer for a data member) or from a
 destructor, and the object to which the call applies is the object under
 construction or destruction, the function called is the one defined in the
 constructor or destructor’s own class or in one of its bases, but not a
 function overriding it in a class derived from the constructor or
 destructor’s class, or overriding it in one of the other base classes of the
 most derived object.*

 Because of this difference in behavior, it is recommended that object’s
 virtual function is not invoked while it is being constructed or destroyed.
 See this
 https://www.securecoding.cert.org/confluence/display/cplusplus/OOP30-CPP.+Do+not+invoke+virtual+functions+from+constructors+or+destructorsfor
 more details.
 ..CAN ANYONE GIVE A SIMPLE EXPLANANTION?? given explanation is
 quite confusing

 --
 Regards,
 $iva

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Re: [algogeeks] How to write the algorithm for longest increasing subsequence problem with complexity O(n logn)

2011-08-01 Thread coder dumca
it can be done in O(n)

On Mon, Aug 1, 2011 at 5:37 AM, kumar raja rajkumar.cs...@gmail.com wrote:

 I have seen the code in algorithmist ,but i am not getting it.

 @Piyush

 how will u solve it using 2-4 tree

 On 31 July 2011 23:39, Piyush Gaurav piyush.iitkgp...@gmail.com wrote:

 u need a 2,4 tree for dat


 On 1 August 2011 11:59, Amol Sharma amolsharm...@gmail.com wrote:

 can be done with some modification on dp solution of O(n^2).

 i am comfortable with the O(n^2) solution. but i am also having
 difficulty in O(nlogn) solution

 check this link
 http://www.algorithmist.com/index.php/Longest_Increasing_Subsequence


 --


 Amol Sharma
 Third Year Student
 Computer Science and Engineering
 MNNIT Allahabad




 On Mon, Aug 1, 2011 at 11:49 AM, kumar raja rajkumar.cs...@gmail.comwrote:



 --
 Regards
 Kumar Raja
 M.Tech(SIT)
 IIT Kharagpur,
 10it60...@iitkgp.ac.in
 7797137043.
 09491690115.

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 7797137043.
 09491690115.

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Re: [algogeeks] HOW GARBAGE COLLECTOR WORKS IN JAVA

2011-08-01 Thread coder dumca
@ vaibhav   when we  are sure that we  dont need a particular object we can
call gc

On Mon, Aug 1, 2011 at 1:46 AM, Deepthi Srinivasan deeps1...@gmail.comwrote:

 Garbage collector'll never run according to our whims and fancies :P It'll
 run only when it wants (mostly when it senses that memory is going down). We
 can issue a request using system.gc but we cannot MAKE it run...


 On Sun, Jul 31, 2011 at 11:56 PM, vaibhav shukla 
 vaibhav200...@gmail.comwrote:

 @mr coder : y do we need to call garbage collector explicitly when it
 works automatically ?


 On Sun, Jul 31, 2011 at 11:07 PM, coder dumca coder.du...@gmail.comwrote:

 generally jvm runs on following occasions

 1: periodicaliy
 2: when program is about to run out of memory the  JVM runs  and
 finallize the objects.
 3: when we call using System.gc  or Runtime.getruntime.gc

 pls correct me if i m wrong

 On Sat, Jul 30, 2011 at 11:10 AM, vaibhav shukla 
 vaibhav200...@gmail.com wrote:

 please give a glimps of how garbage collection is done in java.
 how *System.gc()*  works ?

 --
   best wishes!!
 Vaibhav


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 Vaibhav
   MCA


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Re: [algogeeks] Re: Interview ques

2011-07-31 Thread coder dumca
yes Sandeep(sir)  is perfectly right , if we definig a base class function
in derived with exactly same function signature  , the function in derived
class said to override the function in base class,   does nt matter whether
it is virtual or not.

On Sun, Jul 31, 2011 at 10:22 AM, Sandeep Jain sandeep6...@gmail.comwrote:

 @Pandharinath: Please consider the following e.g.
 class A
 {
 public:
 void func(){ /* A'simplementation */}
  };

 class B:public A
 {
 public:
 void func(){/* B's implementation*/ }
 };

 What is B's func() doing?




 Regards,
 Sandeep Jain




 On Sun, Jul 31, 2011 at 10:36 PM, pandharinath gorde 
 pandharinath.go...@gmail.com wrote:


 sandeep ur misguiding all things are,.

 for overriding virtual keyword is used that means virtual functions only
 overriden.
 In c++ u require to add virtual keyword.
 and in java every non static function is by default virtual.



 On Sun, Jul 31, 2011 at 10:23 PM, Sandeep Jain sandeep6...@gmail.comwrote:

 Overridden functions and virtual functions are two different concepts...
 1) Two functions in the same scope having same but different signatures =
 Over Loading
 2) Two functions having same signatures but one defined in parent class
 and the other defined in child class == Overriding
 3) Virtual functions, allow for run time polymorphism among overridden
 functions.(only when invoked using pointer)

 btw I'm still trying to think if preventing function over-riding is
 possible...


 Regards,
 Sandeep Jain




 On Sun, Jul 31, 2011 at 10:13 PM, Ankit Minglani 
 ankit.mingl...@gmail.com wrote:

 @aditi : in C++ you define a function virtual to let the derived class
 give its own definition for the same. and in that case the functions are
 overridden. unlike in JAVA where no virtual keyword is needed .. so if you
 write the same code as above in java .. that may be referred to as Method
 overriding .. but not in cpp.


 On Sun, Jul 31, 2011 at 9:34 AM, aditi garg 
 aditi.garg.6...@gmail.comwrote:

 @ Ankit: Wat is overriding actually thn?


 On Sun, Jul 31, 2011 at 9:58 PM, Anika Jain anika.jai...@gmail.comwrote:

 ohkk.. m so sorry


 On Sun, Jul 31, 2011 at 9:41 PM, Ankit Minglani 
 ankit.mingl...@gmail.com wrote:

 @anika: This is not function overriding i think .. you cannot call
 the f() function of the base class from the derived class object .. 
 what you
 are doing is creating a object of the derived class and calling the 
 version
 of f() that belong to derived class B .. ie is the same class object is
 calling the same class function .

 correct me if i m wrong .


 On Sun, Jul 31, 2011 at 8:42 AM, Anika Jain 
 anika.jai...@gmail.comwrote:

 @ muthu : not declaring tht function as virtual wont save overriding

 class A
 {
 int a;

 public:
 void f()
 {}
 int f2(){}
 };

 class B:public A
 {
 public:
 void f()
 {
 coutabc\n;
 }
 };

 int main()
 {
 B ob;
 ob.f();
 return 0;
 }

 in this output is abc..
 so overriding occured


 On Sun, Jul 31, 2011 at 8:41 PM, muthu raj muthura...@gmail.comwrote:

 Using friend functions we can only invoke already defined private
 functions. We cannot override or prevent overriding using friend 
 functions.
 The problem here is how to prevent base class function from being 
 overridden
 in derived class.

 *Muthuraj R
 IV th Year , ISE
 PESIT , Bangalore*



   On Sun, Jul 31, 2011 at 8:04 AM, Anika Jain 
 anika.jai...@gmail.com wrote:

 what if we write that function as private of base class.. and make
 a function in derived class that is friend function of the base 
 class do
 that it can call tht private function of base.??


 On Sun, Jul 31, 2011 at 8:25 PM, muthu raj 
 muthura...@gmail.comwrote:

 Yeah but there is no equivalent of final keyword in c++.So to
 prevent member function from overriding in derived class in c++ 
 dont declare
 the member function as virtual. Then it cannot be overridden in 
 derived
 class. There is no other way of preventing a member function of 
 base class
 from being overridden.

 *Muthuraj R
 IV th Year , ISE
 PESIT , Bangalore*



   On Sun, Jul 31, 2011 at 7:38 AM, himanshu kansal 
 himanshukansal...@gmail.com wrote:

 i think there is no keyword known as final in c++.maybe u
 are talking with respect to java


 On Sun, Jul 31, 2011 at 8:03 PM, muthu raj 
 muthura...@gmail.com wrote:

 By  declaring the function a static final f().
 *Muthuraj R
 IV th Year , ISE
 PESIT , Bangalore*



   On Sun, Jul 31, 2011 at 7:28 AM, himanshu kansal 
 himanshukansal...@gmail.com wrote:

  sry i thinki misspelled d ques
 d ques was


 how will you protect a derived class to override base class's
 member function in c++

 say if there is a function f() in base class then derived
 should not be able to
 override f() to provide its own definition.
 but The function must be accessible in derived class.


 PS:dont try to make the function private in base class( it
 will be
 become inaccessible in 

Re: [algogeeks] Re: Interview ques

2011-07-31 Thread coder dumca
@ muthuraj
see here display in derived is overriding display() in base  and also has
purpose
class A
{
int a;
   public :
void dispaly()
{
  couta;
}
};

class B:public A
{
 int b;
 public :
 void display()
{
   A::dispaly();
  coutb;
}
};

On Sun, Jul 31, 2011 at 10:25 AM, muthu raj muthura...@gmail.com wrote:

 Function overriding gains significance only when functions are declared
 virtual. Otherwise Overriding does not serve any purpose. the main idea
 behind virtual functions and method overloading is to implement Dynamic
 Polymorphism i.e decide which version of function(base or derived)  to be
 invoked during runtime.

 *Muthuraj R
 IV th Year , ISE
 PESIT , Bangalore*



   On Sun, Jul 31, 2011 at 10:22 AM, Sandeep Jain sandeep6...@gmail.comwrote:

 @Pandharinath: Please consider the following e.g.
 class A
 {
 public:
 void func(){ /* A'simplementation */}
  };

 class B:public A
 {
 public:
 void func(){/* B's implementation*/ }
 };

 What is B's func() doing?




 Regards,
 Sandeep Jain




 On Sun, Jul 31, 2011 at 10:36 PM, pandharinath gorde 
 pandharinath.go...@gmail.com wrote:


 sandeep ur misguiding all things are,.

 for overriding virtual keyword is used that means virtual functions only
 overriden.
 In c++ u require to add virtual keyword.
 and in java every non static function is by default virtual.



 On Sun, Jul 31, 2011 at 10:23 PM, Sandeep Jain sandeep6...@gmail.comwrote:

 Overridden functions and virtual functions are two different concepts...

 1) Two functions in the same scope having same but different signatures
 = Over Loading
 2) Two functions having same signatures but one defined in parent class
 and the other defined in child class == Overriding
 3) Virtual functions, allow for run time polymorphism among overridden
 functions.(only when invoked using pointer)

 btw I'm still trying to think if preventing function over-riding is
 possible...


 Regards,
 Sandeep Jain




 On Sun, Jul 31, 2011 at 10:13 PM, Ankit Minglani 
 ankit.mingl...@gmail.com wrote:

 @aditi : in C++ you define a function virtual to let the derived class
 give its own definition for the same. and in that case the functions are
 overridden. unlike in JAVA where no virtual keyword is needed .. so if you
 write the same code as above in java .. that may be referred to as Method
 overriding .. but not in cpp.


 On Sun, Jul 31, 2011 at 9:34 AM, aditi garg aditi.garg.6...@gmail.com
  wrote:

 @ Ankit: Wat is overriding actually thn?


 On Sun, Jul 31, 2011 at 9:58 PM, Anika Jain 
 anika.jai...@gmail.comwrote:

 ohkk.. m so sorry


 On Sun, Jul 31, 2011 at 9:41 PM, Ankit Minglani 
 ankit.mingl...@gmail.com wrote:

 @anika: This is not function overriding i think .. you cannot call
 the f() function of the base class from the derived class object .. 
 what you
 are doing is creating a object of the derived class and calling the 
 version
 of f() that belong to derived class B .. ie is the same class object is
 calling the same class function .

 correct me if i m wrong .


 On Sun, Jul 31, 2011 at 8:42 AM, Anika Jain anika.jai...@gmail.com
  wrote:

 @ muthu : not declaring tht function as virtual wont save
 overriding

 class A
 {
 int a;

 public:
 void f()
 {}
 int f2(){}
 };

 class B:public A
 {
 public:
 void f()
 {
 coutabc\n;
 }
 };

 int main()
 {
 B ob;
 ob.f();
 return 0;
 }

 in this output is abc..
 so overriding occured


 On Sun, Jul 31, 2011 at 8:41 PM, muthu raj 
 muthura...@gmail.comwrote:

 Using friend functions we can only invoke already defined private
 functions. We cannot override or prevent overriding using friend 
 functions.
 The problem here is how to prevent base class function from being 
 overridden
 in derived class.

 *Muthuraj R
 IV th Year , ISE
 PESIT , Bangalore*



   On Sun, Jul 31, 2011 at 8:04 AM, Anika Jain 
 anika.jai...@gmail.com wrote:

 what if we write that function as private of base class.. and
 make a function in derived class that is friend function of the 
 base class
 do that it can call tht private function of base.??


 On Sun, Jul 31, 2011 at 8:25 PM, muthu raj muthura...@gmail.com
  wrote:

 Yeah but there is no equivalent of final keyword in c++.So
 to prevent member function from overriding in derived class in c++ 
 dont
 declare the member function as virtual. Then it cannot be 
 overridden in
 derived class. There is no other way of preventing a member 
 function of base
 class from being overridden.

 *Muthuraj R
 IV th Year , ISE
 PESIT , Bangalore*



   On Sun, Jul 31, 2011 at 7:38 AM, himanshu kansal 
 himanshukansal...@gmail.com wrote:

 i think there is no keyword known as final in c++.maybe u
 are talking with respect to java


 On Sun, Jul 31, 2011 at 8:03 PM, muthu raj 
 muthura...@gmail.com wrote:

 By  declaring the function a static final f().
 *Muthuraj R
 IV th Year , ISE
 PESIT , Bangalore*



   On Sun, Jul 31, 2011 at 7:28 AM, himanshu kansal 
 

Re: [algogeeks] HOW GARBAGE COLLECTOR WORKS IN JAVA

2011-07-31 Thread coder dumca
generally jvm runs on following occasions

1: periodicaliy
2: when program is about to run out of memory the  JVM runs  and finallize
the objects.
3: when we call using System.gc  or Runtime.getruntime.gc

pls correct me if i m wrong

On Sat, Jul 30, 2011 at 11:10 AM, vaibhav shukla vaibhav200...@gmail.comwrote:

 please give a glimps of how garbage collection is done in java.
 how *System.gc()*  works ?

 --
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 Vaibhav


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Re: [algogeeks] need the book google resume and algorithms for interviews

2011-07-26 Thread coder dumca
@ Raghvendra  thanks dude

On Mon, Jul 25, 2011 at 7:20 PM, raghavendhra rahul 
rahulraghavend...@gmail.com wrote:


 hi ,

 i think this s the link for algorithm for interviews ebook


 http://code.google.com/p/interview/downloads/detail?name=Algorithms%2Bfor%2BInterviews%2B%28scan%2Bocr%29.pdf

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[algogeeks] need the book google resume and algorithms for interviews

2011-07-25 Thread coder dumca
hi frnds
if some body have  these  books  in  pdf  or  can share the link of  the
google resume and  algorithms for interviews.

thanks in advance.

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Re: [algogeeks] FOR ALL INDIANS PLZ READ IT

2011-06-10 Thread coder dumca
so what ? supporting anna hazare is not a bad idea.

On Thu, Jun 9, 2011 at 12:54 PM, Naveen Kumar naveenkumarve...@gmail.comwrote:

 There is no such condition put up by the govt.
 If you give a missed call you are showing your support to Anna Hazare
 Please read
 http://theindiapost.com/delhi/support-hazare-give-call-02261550789/


 On Thu, Jun 9, 2011 at 12:15 PM, Abdul Rahman Shariff 
 ears7...@gmail.comwrote:

 did u try it ??
 nd did u get the msg??

 On Thu, Jun 9, 2011 at 1:06 AM, kartik sachan kartik.sac...@gmail.comwrote:

 Frnz govt of india has put a condition dat lokpal bill will b implemented
 if 25 crore ppl spport it. plz give a miss kol(free) to 02261550789 .kol
 ends itself n u ll get a msg rply. Plz support against corruption...

 --

 *WITH REGARDS,*
 *
 *
 *KARTIK SACHAN*

 *B.TECH 2ND YEAR*
 *COMPUTER SCIENCE AND ENGINEERING*
 *NIT ALLAHABAD*

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 Naveen Kumar

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[algogeeks] searching a number in circular sorted array

2011-06-10 Thread coder dumca
hi frndz

given an array which is circularly sorted  like

6  ,7,8   ,1   ,2   ,3  ,4,5
 search a  given number.

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Re: [algogeeks] FOR ALL INDIANS PLZ READ IT

2011-06-09 Thread coder dumca
wow it's working ...

On Wed, Jun 8, 2011 at 11:49 PM, sunny agrawal sunny816.i...@gmail.comwrote:

 yup,  it works, i tried it!!


 On Thu, Jun 9, 2011 at 12:15 PM, Abdul Rahman Shariff 
 ears7...@gmail.comwrote:

 did u try it ??
 nd did u get the msg??

 On Thu, Jun 9, 2011 at 1:06 AM, kartik sachan kartik.sac...@gmail.comwrote:

 Frnz govt of india has put a condition dat lokpal bill will b implemented
 if 25 crore ppl spport it. plz give a miss kol(free) to 02261550789 .kol
 ends itself n u ll get a msg rply. Plz support against corruption...

 --

 *WITH REGARDS,*
 *
 *
 *KARTIK SACHAN*

 *B.TECH 2ND YEAR*
 *COMPUTER SCIENCE AND ENGINEERING*
 *NIT ALLAHABAD*

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 --
 Sunny Aggrawal
 B-Tech IV year,CSI
 Indian Institute Of Technology,Roorkee


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[algogeeks] Re: please help me

2011-06-09 Thread coder dumca
I need some more books specialy on algo ds and puzzles

On Wed, Jun 8, 2011 at 4:07 AM, coder dumca coder.du...@gmail.com wrote:

 I am last year  student preparing for placements

 can any one give some ebooks on data structure,  algo etc.  like beofre
 some time , some one posted a book  how to crack the coding interview
 that was an awesome book thanks to the guy who send the book . if anyone has
 some good ebooks  or links  loke these then please  post.
 thanks.


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[algogeeks] c problem

2011-06-08 Thread coder dumca
can any one tell me why this code perfectly running and giving ouput 56

int main()
{
int *p=malloc(0);
*p=56;
printf(%d,*p);
return 0;
}

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[algogeeks] please help me

2011-06-08 Thread coder dumca
I am last year  student preparing for placements

can any one give some ebooks on data structure,  algo etc.  like beofre some
time , some one posted a book  how to crack the coding interview  that was
an awesome book thanks to the guy who send the book . if anyone has some
good ebooks  or links  loke these then please  post.
thanks.

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Re: [algogeeks] c problem

2011-06-08 Thread coder dumca
@harshalthanks  , can u tell me how to find what features are compiler
dependent

On Wed, Jun 8, 2011 at 4:28 PM, Harshal hc4...@gmail.com wrote:

 This depends upon the implementation. Hence, your program is not
 portable. It's allowed to return NULL, and it's allowed to return a non-NULL
 pointer. Both ways are sanctioned by the Standard.

 On Wed, Jun 8, 2011 at 4:20 PM, coder dumca coder.du...@gmail.com wrote:

 can any one tell me why this code perfectly running and giving ouput 56

 int main()
 {
 int *p=malloc(0);
 *p=56;
 printf(%d,*p);
 return 0;
 }

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 --
 Harshal Choudhary,
 III Year B.Tech CSE,
 NIT Surathkal, Karnataka, India.


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Re: [algogeeks] [brain teaser] Salman age puzzle 7 june

2011-06-08 Thread coder dumca
84 years  really good .

On Tue, Jun 7, 2011 at 1:49 PM, Terence technic@gmail.com wrote:

  84 years.
 The well known Diophantus Riddle:
 http://en.wikipedia.org/wiki/Diophantus#Biography


 On 2011-6-7 16:03, Lavesh Rawat wrote:

*Salman age puzzle
 * * *
 *
 *
 **
 *salman's youth lasted one sixth of his life. He grew a beard after one
 twelfth more. After one seventh more of his life, he married. 5 years later,
 he and his wife had a son. The son lived exactly one half as long as his
 father, and salman died four years after his son.

 How many years did salman live?
 *
 *Update Your Answers at* : Click 
 Herehttp://dailybrainteaser.blogspot.com/2011/06/salman-age-puzzle-7-june.html?lavesh=lavesh

  Solution:

  Will be updated after 1 day



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Re: [algogeeks] Re: Min Enqueue Dequeue in O(1)

2011-06-08 Thread coder dumca
I have same problem  to implement a to implement a stack with functions
push(int)  pop   min()  and max()  in O(1)
if some one know please elaborate.

On Tue, Jun 7, 2011 at 11:13 PM, ross jagadish1...@gmail.com wrote:

 Can u pls elaborate on your approach further?

 On Jun 7, 10:17 pm, NIKHIL JAIN nikhil.jain.shali...@gmail.com
 wrote:
  it with the change that now it is min
 
  On Tue, Jun 7, 2011 at 10:47 PM, NIKHIL JAIN 
 nikhil.jain.shali...@gmail.com
 
 
 
 
 
 
 
   wrote:
   i think sliding window is based on
 
   On Tue, Jun 7, 2011 at 9:26 PM, ross jagadish1...@gmail.com wrote:
 
   Design a Queue (strictly fifo) to support findmin, enqueue, dequeue in
   o(1).
   extra space allowed.
   (for a stack, its trivial with 2 stacks) Can the same approach be
   applied for a queue?
 
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Re: [algogeeks] Re: Samsung Bangalore is hiring a lot!!!!

2011-06-08 Thread coder dumca
to sayan nayak   last year MCA students can apply  please reply( with some
idea abt compensation)

On Tue, Jun 7, 2011 at 11:39 PM, ross jagadish1...@gmail.com wrote:

 @sayan: thanks for the info :) Any idea on the compensation dude?

 On Jun 7, 10:53 pm, sayan nayak sayanna...@gmail.com wrote:
  :D.Sure.Afterall  Destiny is not a matter of chances,it all abt ur
 choices
  :)
 
  On Tue, Jun 7, 2011 at 11:20 PM, sunny agrawal sunny816.i...@gmail.com
 wrote:
 
 
 
 
 
 
 
   uninterested can filter messeges from sayanna...@gmail.com. :P
 
   On Tue, Jun 7, 2011 at 11:14 PM, sayan nayak sayanna...@gmail.com
 wrote:
 
   Multiple openings in Samsung Bangalore in following domains:
1. Wireless protocols
2. Android
3. Multimedia
4. Browser
5. mobile application.
6.Embedded System.
   interested people can send their resume to sayanna...@gmail.com.
 
   Regards,
   Sayan
 
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   --
   Sunny Aggrawal
   B-Tech IV year,CSI
   Indian Institute Of Technology,Roorkee
 
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Re: [algogeeks] [brain teaser ] Find The Next Number 6 june

2011-06-06 Thread coder dumca
I still didn't got arpit can u explain pls.

On Mon, Jun 6, 2011 at 7:15 AM, shashankreddy509 shashankreddy...@gmail.com
 wrote:

 thanks Arpit

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