In while loop have i,j which points first and last index of array. In
while loop, Check the sum of a[i],a[j], If sum<k,increment i or else
decrement j. Run the while loop till i<j..
CODE:
int arraysum(int a[], int k, int i, int j)
while(i<j)
{
int p=0;
int b[10]; //to store index of selected nos
sum=a[i]+a[j];
if (sum==k)
{
b[p++]=i;b[p++]=j;
}
elseif(sum<k)
i++;
else(sum>k)
j++;
return b;
}
On May 20, 4:38 am, amit <[email protected]> wrote:
> given an array of integers, and an integer k, find out two elements
> from the array whose sum is k in O(n) time. if no such element exists
> output none.
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