LeetCode解题笔记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]. python解法一：

def twoSum(self, nums, target): for i in range(len(nums)) : for j in range(1,len(nums)-i) : if nums[i] + nums[i+j]==target : return i,j+i C语言解法一：

int* twoSum(int* nums, int numsSize, int target) { int i,j; static int res[2]; for (i=0; i<numsSize; i++) { for (j=i+1; j<numsSize; j++) { if (nums[i]+nums[j]==target) { res[0]=i; res[1]=j; break; } else { continue; } } } return res; }