Two Sum

作者: Wenyue_offer | 来源:发表于2017-09-12 08:29 被阅读0次

X Sums
Leetcode 解题记录
#1. Two Sum & 167 Two Sum II
1. Two Sum
leetcode hot100
LeetCode 1. Two Sum (Easy)
Triangle Count (Lintcode 382)
Leetcode PHP题解--D84 371. Sum of
two sum&&three sum&&four sum&&th
Leetcode PHP题解--D89 653. Two Sum

class Solution {
    public int[] twoSum(int[] nums, int target) {
        Map<Integer,Integer> map = new HashMap<>();
        for (int i=0;i<nums.length;i++){
            int num = target - nums[i];
            if(map.containsKey(num)){
                return new int[] {map.get(num),i};
            }
            map.put(nums[i],i);
        }
        return new int[] {};
    }
}

X Sums
Two Sum It is not easy to write Two-Sum right for the fir...
Leetcode 解题记录
Two sum From https://leetcode.com/problems/two-sum/descri...
#1. Two Sum & 167 Two Sum II
Two Sum I https://leetcode.com/problems/two-sum/#/descrip...
1. Two Sum
1. Two Sum 题目:https://leetcode.com/problems/two-sum/ 难度: ...
leetcode hot100
1. Two Sum[https://leetcode-cn.com/problems/two-sum/] 字典（...
LeetCode 1. Two Sum (Easy)
LeetCode 1. Two Sum (Easy) LeetCode 1. Two Sum (Easy) 原题链...
Triangle Count (Lintcode 382)
这道题相当于two sum 以及 two sum II 的follow up题。是two pointer类题目。而...
Leetcode PHP题解--D84 371. Sum of
D84 371. Sum of Two Integers 题目链接 371. Sum of Two Integer...
two sum&&three sum&&four sum&&th
two sum 3 sum 3Sum Closest 4 sum 利用set来实现： 3 sum 4 sum
Leetcode PHP题解--D89 653. Two Sum
D89 653. Two Sum IV - Input is a BST 题目链接 653. Two Sum IV...