LeetCode 1 Two Sum

题目

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, and you may not use the same element twice.

Example:

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

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

这好像是在前排的Easy的一题
设计知识点:

  • 动态数组的开辟
  • 暴力法
    C语言结局的思路如下:
    开辟一个新的数组(动态数组的开辟):用来放返回的数组,在应用暴力法计算相应的数值。

新知识点:动态数组的开辟。
代码:


int* twoSum(int* nums, int numsSize, int target) {
    
    int *re=(int*)malloc(2*sizeof(int));
    for(int i=0;i<numsSize;i++)
    {
        for(int j=i+1;j<numsSize;j++)
        {
            if(nums[i]+nums[j]==target)
            {
                re[0]=i;
               re[1]=j;
            }
        }
    }
    
    return re;
}

posted @ 2018-08-16 23:41  aclihui  阅读(131)  评论(0编辑  收藏  举报