每日一题

#include <stdio.h>

UINT64 twoSum
    (
    INT32 *nums,
    UINT32 numsSize,
    INT32  target)
    {
    UINT32 i;
    UINT32 j;
    UINT64 result = 0;

    for(i = 0; i < numsSize; ++i)
        {
        for(j = i + 1; j < numsSize; ++j)
            {
            if(nums[i] + nums[j] == target)
                {
                result = (UINT64)i | ((UINT64)j<<32);

                /* break the loop */
                i = numsSize;
                i = numsSize;
                }
            }
        }
    return result;
    }

/* test case */
void test(INT32 target)
    {
    INT32 data[] = {1, 2, 4, 7, 12};
    UINT64 result = twoSum(data, 5, target);
    if(result != 0)
        printf("%d + %d = %d\n", data[result>>32], data[result&0xffffffff], target);
    }