Two Sum

PROBLEM :

Given an array of integers, return indices of the two numbers such that they add up to a specific target.

You may assume that each input would have exactly one solution.

Example:

Given nums = [2, 7, 11, 15], target = 9,

Because nums[0] + nums[1] = 2 + 7 = 9,
return [0, 1].


------------------------------------------------------------------------------
SIMPLE C++ IMPLEMENTATION 
----------------------------------------------------------------------------------

/**
 * Note: The returned array must be malloced, assume caller calls free().
 */
int* twoSum(int* nums, int numsSize, int target) {
    int i,j,sum,*data ;
    flag=0 ;
    for(i=0;i<numsSize;i++)
    {
        for(j=i+1;j<numsSize;j++)
        {
            sum=nums[i]+nums[j] ;
            if(sum==target)
            {
                data=(int*)malloc(sizeof(int)*2) ;
                data[0]=i ;
                data[1]=j ;
                break ;
            }

        }
    }
    
    return data ;
}

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