to print from 10 to 7 in the row number 4. here prev will be 6.
On Sun, Aug 14, 2011 at 10:05 AM, AASHISH SUMAN
<aashish.barn...@gmail.com>wrote:
> @ankur
>
> what is the need of
> prev=((i-)*i)/2;
>
>
>
>
> On Sun, Aug 14, 2011 at 9:51 AM, Ankur Khurana
> <ankur.kkhur...@gmail.com>wrote:
>
>> see , we can see that
>> first lline have 1 number, second have 2 and third have 3 .....and so on.
>> we can observe that first number of every row is sum of first k narutal
>> number, where k is the row number. so for k=4, n=((4+1)*4)/2=10;
>>
>> so run a for loop,
>>
>>
>> for(int i=1;i<num_rows;i++)
>> {
>> prev=((i-)*i)/2;
>> k=((i+1)*i)/2;
>> for(int j=k;i;k>prev;j--)
>> {
>> cout<<prev<<" ";
>> }
>> cout<<endl;
>> }
>>
>>
>> On Sun, Aug 14, 2011 at 9:43 AM, Dave <dave_and_da...@juno.com> wrote:
>>
>>> @Beginner: The largest number n in row r satisfies n = (r^2 + r) / 2.
>>> So using the Quadratic Formula gives
>>>
>>> r = ( sqrt( 8*n + 1 ) - 1 ) / 2.
>>>
>>> For the row number r for any n (not necessarily the largest one in a
>>> row),
>>>
>>> r = ceil( sqrt( 8*n + 1 ) - 1 ) / 2 )
>>>
>>> where ceil( x ) is the smallest integer not exceeding x.
>>>
>>> Dave
>>>
>>> On Aug 13, 10:22 pm, Beginner <murugavidya1...@gmail.com> wrote:
>>> > How to print this triangle?
>>> > 1
>>> > 3 2
>>> > 6 5 4
>>> > 10 9 8 7
>>> > and how to find the number of rows if n is given?
>>> > For ex if n=10 how to find num of rows=4??
>>> > Is it Log 10 to the base of 2!!!!!!
>>>
>>> --
>>> You received this message because you are subscribed to the Google Groups
>>> "Algorithm Geeks" group.
>>> To post to this group, send email to algogeeks@googlegroups.com.
>>> To unsubscribe from this group, send email to
>>> algogeeks+unsubscr...@googlegroups.com.
>>> For more options, visit this group at
>>> http://groups.google.com/group/algogeeks?hl=en.
>>>
>>>
>>
>>
>> --
>> Ankur Khurana
>> Computer Science
>> Netaji Subhas Institute Of Technology
>> Delhi.
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "Algorithm Geeks" group.
>> To post to this group, send email to algogeeks@googlegroups.com.
>> To unsubscribe from this group, send email to
>> algogeeks+unsubscr...@googlegroups.com.
>> For more options, visit this group at
>> http://groups.google.com/group/algogeeks?hl=en.
>>
>
>
>
> --
> *WITH BEST REGARDS :
>
> AASHISH SUMAN
> MCA FINAL YEAR
> *
> *NIT DURGAPUR*
> *+91-9547969906*
>
> --
> You received this message because you are subscribed to the Google Groups
> "Algorithm Geeks" group.
> To post to this group, send email to algogeeks@googlegroups.com.
> To unsubscribe from this group, send email to
> algogeeks+unsubscr...@googlegroups.com.
> For more options, visit this group at
> http://groups.google.com/group/algogeeks?hl=en.
>
--
Ankur Khurana
Computer Science
Netaji Subhas Institute Of Technology
Delhi.
--
You received this message because you are subscribed to the Google Groups
"Algorithm Geeks" group.
To post to this group, send email to algogeeks@googlegroups.com.
To unsubscribe from this group, send email to
algogeeks+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/algogeeks?hl=en.
