题目链接：https://leetcode.com/problems/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. Example: …

今天用C写了LeetCode第一个题目，题目如下： 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…

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今天做了一道LeetCode上的题目—Two Sum，要求是求一个数组中是否有两个数的和是等于给定的值taget，如果有就返回这两个数的下标，没有返回【-1,-1】 思路 第一步：先判断输入的数组是否是null如果是空直接返回null; 第二部&#x…