萌新小白LeetCode之路——1.Two Sum
Leetcode专栏
Leetcode第一题(HashMap解法)
Leetcode第9题
Leetcode第21题
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].
在数组nums中,取出你想得到的target,返回组成这两个数的在数组中的位置
// two sum
class Solution {
public int[] twoSum(int[] nums, int target) {
int[] slove = {0,0};
for(int i=0;i<nums.length;i++)
{
for(int j=i+1;j<nums.length;j++)
//这里我理解为,数组中第一个与后面所有的都没有
//可以得到target,所以是从第i+1个开始
{
if(nums[i]+nums[j]==target)
{
slove[0] = i;
slove[1] = j;
return slove;
}
}
}
return slove;
}
}
测试结果
图片:
21.05%结果不是很高,不过第一题啦,只是一个开始