int* twoSum(int* nums, int numsSize, int target, int* returnSize){
    int left = 0;
    int right = numsSize-1;
    int *p = NULL;
    while(left!=right)
    {
        if(nums[left]+nums[right]>target)
        {
            right--;
        }
        else if(nums[left]+nums[right]<target)
        {
            left++;
        }
        else
        {
            p = (int*)malloc(sizeof(int)*2);
            p[0] = nums[left];
            p[1] = nums[right];
            *returnSize = 2;
            return p;
        }
    }
    *returnSize = 0;
    return NULL;
}