Subsequnce or Subset of an array

Question

How to find the subsequence or subset of an array that contain n elements?

Can anyone explain me how to do. Preferably in C++

Answer 1

Can you explain me with an example

Answer 2

Oh let me see i will tell you in a minute

Answer 3

Are asking about how to get all the values from an array ??

Answer 4

I'm asking about subsequence or subset of an array Sahil Bhakat

Answer 5

If you have an array {1, 2, 3} then subsets are {1}, {2}, {3}, {1, 2}, {2, 3}, {1, 3}, {1, 2, 3} are subsets of that array

But I need subset that contain n elements. i.e If n=2 then subsets are {1, 2}, {2, 3}, {1, 3}.

Answer 6

There is one problem

Answer 7

What? Sahil Bhakat

Answer 8

If the array is {1,2,3,4}
Then the subsets you need are this - {1,2},{1,3},{1,4},{2,3},{2,4},{3,4} right?

Answer 9

Similar to that but it's not necessarily 2 elements it may be of any number of elements less than the size of array

Answer 10

Yes for 2 elements is this correct ?

Answer 11

Yeah it's correct

Answer 12

Sorry i am going somewhere so you should put another question if you are in hurry or i will do it later

Answer 13

Keep me posted if you can

Answer 14

If you can complete it, I will leave it up to you.

Answer 15

Ok thanks

Answer 16

m=sizeof(a)/sizeof(a[0];
for(i=0;i<m-1;i++)
for(j=i,c=0;j<m-1;j++)
{
cout<<"{";

for(k=0;k<n;k++)
{
if(k=0)
cout<<a[i];
else
cout<<","<<a[i+c];
c++;
}
cout<<"}, ";
}
cout<<"\b";

Answer 17

Try this and tell me if it works or not

Answer 18

Not working

Answer 19

Ok let me check