LeetCode: Add Binary 解题报告

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LeetCode: Add Binary 解题报告

Add BinaryGiven two binary strings, return their sum (also a binary string). For example,a = "11"b = "1"Return "100". SOLUTION: 指针指到两个字符串的末尾,不断往前推进,用carry表示进位.用stringbuilder来记录结果. 使用insert(0, c)函数将加出的结果不断插入到STRINGBUILDER. pub…

【LeetCode】67. Add Binary 解题报告（Python）

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录题目描述题目大意解题方法 BigInteger类模拟加法日期题目地址:https://leetcode.com/problems/add-binary/description/ 题目描述 Given two binary strings, return their sum (also a binary string). The input strings are bot…

LeetCode: Combination Sum 解题报告

Combination Sum Combination Sum Total Accepted: 25850 Total Submissions: 96391 My Submissions Question Solution Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T. The…

【LeetCode】Permutations 解题报告

全排列问题.经常使用的排列生成算法有序数法.字典序法.换位法(Johnson(Johnson-Trotter).轮转法以及Shift cursor cursor* (Gao & Wang)法. [题目] Given a collection of numbers, return all possible permutations. For example, [1,2,3] have the following permutations: [1,2,3], [1,3,2], [2,1,3], [2…

LeetCode - Course Schedule 解题报告

以前从来没有写过解题报告,只是看到大肥羊河delta写过不少.最近想把写博客的节奏给带起来,所以就挑一个比较容易的题目练练手. 原题链接 https://leetcode.com/problems/course-schedule/ 题目大意有n个课程,编号分别是0到n-1.我们的目标是修完所有课程.然而有些课程有前置课程的,我们必须修完前置课程才能修该门课程.题目给了我们课程之间的前置关系,让我们判断是否能修完所有课程. 题目原型这个题目的描述简单粗暴,我们不难发现,其实是给了我们一个有向图…

LeetCode: Sort Colors 解题报告

Sort ColorsGiven an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here, we will use the integers 0, 1, and 2 to represent the color red, wh…