Re: [algogeeks] C++ initialization list

2014-09-28 Thread Deepak Garg
Hi

In example 1, member z will have a garbage value (i.e. 0 in your case )

Thanks
Deepak
On Sep 28, 2014 11:29 AM, sagar sindwani sindwani.sa...@gmail.com wrote:

 I am working on How compilers handle initialization list. I came across a
 case where I am not sure what should be the compiler behaviour.

 *Example 1:-*

 #include iostream

 class A
 {
 public:
 int x,y,z;
 };

 int main()
 {
 A a1[2] =
 {
 { 1,2 },
 { 3,4 }
 };

 std::cout  a1[0].z is   a1[0].z  std::endl;

 return 0;
 }

 In above case a1[0].z is ? g++ shows it as 0 ( zero ). It is exactly 0 or
 garbage value, I am not sure on that.

 I tried lot of books and some documents , no where I found what C++ says
 for initialization of class objects.

 You can find handling of below case in almost every book.

 *Example 2:- *

 int arr[6] = {0};

 In Example 2,  compilers will auto-fill all members with 0. It is
 mentioned in books. But when it comes to User-defined datatypes nothing is
 mentioned.


 Please share your thoughts on this. If you find any document related to
 this, please share it as well.

 Thanks
 Sagar

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Re: [algogeeks] C++ initialization list

2014-09-28 Thread Deepak Garg
Hi sagar

Actually its the compiler which is doing things for you.
GCC or G++ have some features that allows you to initialize array. For
example in your case 2 when you specify a single element gcc intializes the
whole array with 0. You can do this also:
Int arr [6]={[3]=0, [4]=5} p.s. gcc allows u to do this type of
initialisation.
You can refer gcc doc online for more info.
 On Sep 28, 2014 3:59 PM, sagar sindwani sindwani.sa...@gmail.com wrote:

 Thanks Deepak and Rahul for the reply.

 Do you guys have any standard document or any standard book which defines
 this?  I totally agree with these answers but I don't have any formal
 written text.

 In my example 1, the object is on stack and this lead to a1[0].z to be
 un-initialized. But as the specified in example 2, Why every element of arr
 is initialized, it is also on the stack ? Any source to answer this
 question ?

 Thanks
 Sagar



 On Sun, Sep 28, 2014 at 2:26 PM, Rahul Vatsa vatsa.ra...@gmail.com
 wrote:


 http://stackoverflow.com/questions/3127454/how-do-c-class-members-get-initialized-if-i-dont-do-it-explicitly

 On Sun, Sep 28, 2014 at 12:22 PM, Deepak Garg deepakgarg...@gmail.com
 wrote:

 Hi

 In example 1, member z will have a garbage value (i.e. 0 in your case )

 Thanks
 Deepak
 On Sep 28, 2014 11:29 AM, sagar sindwani sindwani.sa...@gmail.com
 wrote:

 I am working on How compilers handle initialization list. I came across
 a case where I am not sure what should be the compiler behaviour.

 *Example 1:-*

 #include iostream

 class A
 {
 public:
 int x,y,z;
 };

 int main()
 {
 A a1[2] =
 {
 { 1,2 },
 { 3,4 }
 };

 std::cout  a1[0].z is   a1[0].z  std::endl;

 return 0;
 }

 In above case a1[0].z is ? g++ shows it as 0 ( zero ). It is exactly 0
 or garbage value, I am not sure on that.

 I tried lot of books and some documents , no where I found what C++
 says for initialization of class objects.

 You can find handling of below case in almost every book.

 *Example 2:- *

 int arr[6] = {0};

 In Example 2,  compilers will auto-fill all members with 0. It is
 mentioned in books. But when it comes to User-defined datatypes nothing is
 mentioned.


 Please share your thoughts on this. If you find any document related to
 this, please share it as well.

 Thanks
 Sagar

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[algogeeks] Subtractive Clustering

2012-04-01 Thread Deepak Garg
hey geeks!

My aim is to cluster my data using subtractive clustering and so that
further I can extract Fuzzy Rules from that.

suppose I have the following 2 dimensional data:-

X[]=[  
{0,.16,.24,.42,.48,.66,.83,.24,.42,.48,.66,.66,.16,.24,.42,.42,.48,.48,.48,.66,.66,.66,.66,.66,.66,.66,.83,.83,.83,.66},

   
{0,0,0,0,0,0,0,.15,.13,.1,.12,.18,.58,.78,.59,.78,.45,.49,.58,.45,.49,.58,.65,.71,.715,.72,.66,.725,.726,.455}
 ]


so how can i implement it using java

kindly provide me some example

Regards and Thanks
Deepak
BTech CSE

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[algogeeks] google

2012-04-01 Thread Deepak Garg
hey guys!

google is coming to our college, their main requirements is from
operating systems and computer networks.

can some one post the sample questions for it..

thanks
Deepak

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Re: [algogeeks] Re: extracting vector (digitization) from an ECG image

2012-01-10 Thread Deepak Garg
@SAMM

i want to achieve the digitization as shown in the video
http://www.youtube.com/watch?v=yCIeKc__LdM

kindly have a look

On Mon, Jan 9, 2012 at 12:40 AM, SAMM somnath.nit...@gmail.com wrote:

 1 month back  I wrote C++ code using Magick++ to zoom a image without
 distorting the Pixels . In that Code we can extact the Pixel
 attributes which are the Combination of Red , Blue and Green and Alpha
 attributes(Contributes to Picture Transparancy So , not present in
 Every Image ). But RBG combination is present in every image . Each
 attributes contribute to 1 byte (32 bits ) .

 Every 4bytes/3 bytes Constitute a single pixel depending alpha
 attribute is present or not in the pic .


 If u want to get Quantize the image then u have to read the Pixel's
 Property starting from (0,0) to (M,N) , where MxN is the dimension of
 the image .

 This Attibutes are representated in 2D array and is sufficient to
 serve ur purpose . And I this is Offcourse Supported for Java except
 for TIFF and JPEG 2000(plugin required separately) .


 There are many plugins also available for extracting this attributes .
 Some plug in enables you to read the Image and and and it will return
 you the starting address of the index (0,0) Corner left of the Image .
 And from there u can read the Bytes to get the attributes depending
 the picture support the Tranparency Property(alpha attribute).


 On 1/8/12, sravanreddy001 sravanreddy...@gmail.com wrote:
  @Deepak: Digitization of the image doesn't have a algorithmic approach,
  (unless you need to compress it)
 
  But, i see that you are asking for a way to convert the image (jpg) into
 a
  memory representation.
  I am not sure of matlab, but, using java (images API) you have to read
 the
  data into digital form (format needed for the neutal network)
 
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[algogeeks] extracting vector (digitization) from an ECG image

2012-01-07 Thread Deepak Garg
my question is about how to achieve digitization of an image/graph image.
for example i have the following ECG image( taken from a normal camera ):-

http://i.stack.imgur.com/QAMfk.png

so what algorithm should i follow to get the digitized image, my final aim
is to feed this information to a neural network that can classify the given
ECG image into a disease class. please suggest me which platform is more
feasible MATLAB or JAVA?

please help me guys!!

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Re: [algogeeks] Memorization

2011-10-11 Thread Deepak Garg
go for Dynamic Programing

On Tue, Oct 11, 2011 at 1:47 PM, arvind kumar arvindk...@gmail.com wrote:

 ya ya,realy sorry..typo!its MEMOIZATION.


 On Mon, Oct 10, 2011 at 10:56 PM, Ankur Garg ankurga...@gmail.com wrote:

 Memoization ?


 On Mon, Oct 10, 2011 at 6:34 PM, arvind kumar arvindk...@gmail.comwrote:

 Can anyone tell me how to go about with the memorization technique to
 retrieve values from already stored values,in case of eveluating
 sequences(fibonacci series,etc).?

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Re: [algogeeks] Google Interview Question

2011-10-01 Thread Deepak Garg
hey,,,what is the process of attending google offcampus process.

kindly let us know..

On Sat, Oct 1, 2011 at 1:52 PM, Rathish Kannan rathishkan...@gmail.comwrote:

 off campus.

 --  RK :)



 On Sat, Oct 1, 2011 at 11:59 AM, arvind kumar arvindk...@gmail.comwrote:

 Hi
 Are u attending off-campus or on-campus interview?

 On 10/1/11, R@TH!$H rathishkan...@gmail.com wrote:
  Hi,
 
  I am attending Google interview on Monday. Please help me with sample
  questions.
 
  Thanks  Regards,
  Rathish Kannan
 
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Re: [algogeeks] Google Interview Question

2011-10-01 Thread Deepak Garg
hey can pls share the link.

thnks

On Sat, Oct 1, 2011 at 2:04 PM, Rathish Kannan rathishkan...@gmail.comwrote:

 apply through google careers site...

 --  RK :)



 On Sat, Oct 1, 2011 at 2:02 PM, Deepak Garg deepakgarg...@gmail.comwrote:

 hey,,,what is the process of attending google offcampus process.

 kindly let us know..


 On Sat, Oct 1, 2011 at 1:52 PM, Rathish Kannan 
 rathishkan...@gmail.comwrote:

 off campus.

 --  RK :)



 On Sat, Oct 1, 2011 at 11:59 AM, arvind kumar arvindk...@gmail.comwrote:

 Hi
 Are u attending off-campus or on-campus interview?

 On 10/1/11, R@TH!$H rathishkan...@gmail.com wrote:
  Hi,
 
  I am attending Google interview on Monday. Please help me with sample
  questions.
 
  Thanks  Regards,
  Rathish Kannan
 
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[algogeeks] Final Year Project Ideas

2011-10-01 Thread Deepak Garg
guys

i m a computer science 4th year students.

Recently i developed an Intrusion detection system and bandwidth utilization
monitoring tool (using JAVA) for ATT as a 2 months internship project
kindly do suggest me some very good final year projects

my interest area is Artificial Intelligence, Networking.
But i would like to do work on other fields as well.

please guys help me...

Regards
Deepak

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Re: [algogeeks] Final Year Project Ideas

2011-10-01 Thread Deepak Garg
thanks for replying sir :)

cn u pls tell me more about developing a binary analyzer that could be used
for fuzzing

On Sat, Oct 1, 2011 at 7:40 PM, Hatta tmd...@gmail.com wrote:

 you if you like both security and artificial intelligence
 maybe you would enjoy developing a binary analyser
 that could be used for fuzzing, reverse engineering and
 (the one I find more interesting) worm/trojan/botnet analysis.


 On Sat, Oct 1, 2011 at 10:47 AM, Deepak Garg deepakgarg...@gmail.com
 wrote:
  guys
  i m a computer science 4th year students.
  Recently i developed an Intrusion detection system and bandwidth
 utilization
  monitoring tool (using JAVA) for ATT as a 2 months internship project
  kindly do suggest me some very good final year projects
  my interest area is Artificial Intelligence, Networking.
  But i would like to do work on other fields as well.
  please guys help me...
  Regards
  Deepak
 
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Re: [algogeeks] Re: google maps

2011-09-20 Thread Deepak Garg
they are using a highly optimized A* algo for rout finding

On Tue, Sep 20, 2011 at 10:01 PM, Dave dave_and_da...@juno.com wrote:

 @Sukran: Well, I would hire about 1000 smart people and let them do
 it. :-)

 Dave

 On Sep 20, 2:12 am, sukran dhawan sukrandha...@gmail.com wrote:
  How do you implement google maps ?

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Re: [algogeeks] Please provide Code to Find kth Smallest or kth Largest element in unsorted array in liner time ?

2011-09-04 Thread Deepak Garg
use quickSelect algo (google)

On Sun, Sep 4, 2011 at 6:35 PM, aditya kumar
aditya.kumar130...@gmail.comwrote:

 first do quick sort . ie (nlog n) then find kth largest/smallest .


 On Sun, Sep 4, 2011 at 6:28 PM, learner nimish7andr...@gmail.com wrote:

 something I Know using quick sort randomization function we can find
 kt smallest/largest in unsorted array , but i am not able to write
 code , please help me in this and provide the code for the same.?


 Thanks
 Nimish K.
 1st Year
 IITR

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Re: [algogeeks] Stack problem

2011-09-04 Thread Deepak Garg
+1 sandeep

On Sun, Sep 4, 2011 at 11:11 PM, SANDEEP CHUGH sandeep.aa...@gmail.comwrote:


 we can take another variable min..

 first time push operation is done , store the element into  min..

 next time push is performed , compare the number u r pushing with the
 already stored no in min  variable.. and store minimum of two no's in min
 variable.. and thn perform the push operation..

 so min always contain the minimum no...

 tell me will that approach work or not?

 On Sun, Sep 4, 2011 at 10:38 PM, Sangeeta sangeeta15...@gmail.com wrote:

 How would you design a stack which,in addition to push and pop,also
 has a function min which returns the minimum element?push,pop and min
 should all operate in O(1) time

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Re: [algogeeks] Stack problem

2011-09-04 Thread Deepak Garg
maintain a separate stack containing min and max element at each step.
so if u pop an element for the original stack, pop from the second stack
also...


On Sun, Sep 4, 2011 at 11:13 PM, Deepak Garg deepakgarg...@gmail.comwrote:

 +1 sandeep

 On Sun, Sep 4, 2011 at 11:11 PM, SANDEEP CHUGH sandeep.aa...@gmail.comwrote:


 we can take another variable min..

 first time push operation is done , store the element into  min..

 next time push is performed , compare the number u r pushing with the
 already stored no in min  variable.. and store minimum of two no's in min
 variable.. and thn perform the push operation..

 so min always contain the minimum no...

 tell me will that approach work or not?

 On Sun, Sep 4, 2011 at 10:38 PM, Sangeeta sangeeta15...@gmail.comwrote:

 How would you design a stack which,in addition to push and pop,also
 has a function min which returns the minimum element?push,pop and min
 should all operate in O(1) time

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Re: [algogeeks] Re: memory allocation question

2011-09-03 Thread Deepak Garg
+1

On Sat, Sep 3, 2011 at 8:57 PM, Ankuj Gupta ankuj2...@gmail.com wrote:

 p is a pointer to an array of 4 integers. So when you do (int(*)
 [col])malloc(row*sizeof(*p)) total of 48 bytes is allocated as
 sizeof(*p) is 12 bytes.

 On Sep 3, 4:14 pm, rohit rajuljain...@gmail.com wrote:
  how many bytes are allocated by following code?
 
  #includealloc.h
  #define col 4
  #define row 3
 
  int main()
  {
  int(*p)[col];
  p=(int(*)[col])malloc(row*sizeof(*p));
 
  return 0;
 
  }
 
  please explain answer?

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Re: [algogeeks] Doubt

2011-08-28 Thread Deepak Garg
ya code is perfectly fine.no error

On Mon, Aug 29, 2011 at 12:07 AM, sagar pareek sagarpar...@gmail.comwrote:

 Success

 http://www.ideone.com/ZFgEh


 On Sun, Aug 28, 2011 at 3:13 PM, Aditya Virmani 
 virmanisadi...@gmail.comwrote:

 it runs perfectly for me on both 64 bit  32 bit... check again


 On Sun, Aug 28, 2011 at 2:20 PM, Nikhil Gupta 
 nikhilgupta2...@gmail.comwrote:

 The following C program segfaults of IA-64, but works fine on IA-32.

   *int* main()

   {
   *int p;
   p *=* (*int)malloc(*sizeof*(*int*));



   ***p *=* 10;
   *return* 0;



   }

 Why does it happen so?

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Re: [algogeeks] C output

2011-08-22 Thread Deepak Garg
its output is

10

On Tue, Aug 23, 2011 at 12:03 AM, rohit rajuljain...@gmail.com wrote:

 #includestdio.h

 #define max(a,b) (ab?a:b)


 int main()
 {

  int j=max(3+2,2+8);
  printf(%d,j);

return 0;
 }

why this program show output as 9 ? please help me

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[algogeeks] Re:

2011-04-03 Thread Dr. Deepak Garg
Beta, puchna hi tha, to mujhse puchte!
Anyways, you will get the solution in tomorrow's lecture @1pm.
I have gone through your profile. See me in my cabin after the class.
Make sure that you attend tomorrow's lecture. For now, study dynamic
programming..

On Apr 3, 6:03 pm, SANDEEP AAMIN sandeep.aa...@gmail.com wrote:
 hey guys please help me to solve this

 QUESTION :  input a number C , an output all of the ways that a group
 of ascending positive numbers can be summed to give C. for e.g if
 C=6,the output should be
 1+2+3
 1+5
 2+4
 [solve using dynamic programming]

 please tell me about this..

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