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全部文章 / leetcode （共16篇）

LeetCode 520. Detect Capital

Given a word, you need to judge whether the usage of capitals in it is right or not. We define the usage of capitals in a word to be right when one o...

leetcode

2017-02-21

0 470

LeetCode 461. Hamming Distance

The Hamming distance between two integers is the number of positions at which the corresponding bits are different. Given two integers x and y, calcu...

leetcode

2017-02-22

0 520

LeetCode 22. Generate Parentheses

Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, given n = 3, a solution set is: ...

leetcode

2017-02-24

0 510

【LeetCode】415. Add Strings,用string模拟加法

题目链接：https://leetcode.com/problems/add-strings/#/description 这个题的目的就是用string模拟整数加法 class Solution { public: string addStrings(string num1, strin...

leetcode string

2017-04-22

0 636

【Leetcode】167. Two Sum II - Input array is sorted

Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The functio...

leetcode

2017-05-03

0 509

【LeetCode】226. Invert Binary Tree

Invert a binary tree. 4 / \ 2 7 / \ / \ 1 3 6 9 to 4 / \ 7 2 / \ / \ 9 6 3 1 思路：递归解决，倒置左子树，倒置右子树，交...

leetcode

2017-05-03

0 540