Subsets-Subarrays-Subsequences

Here I will be Uploading all the problems of Subsequence ,subarrays and subsets.

1. subset return using a 2 dimensional array which is dynamically allocated

   input:

        3
        1 2 3
   

   output:

         3
         2
         2 3
         1
         1 3
         1 2
         1 2 3
   

2. subset return using a 2 dimensioinal vector

3. subset print using a single dimensional array

4. subset return which sums up to K

   input:

        4
        2 1 3 2
        4
   

   output:

       2 2 
       1 3
   

5. subset print which sums up to K

I will be adding rest of the problems soon!!