LeetCode: ZigZag Conversion 解题报告

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LeetCode: ZigZag Conversion 解题报告

ZigZag ConversionThe string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibility) P A H NA P L S I I GY I RAnd then read line b…

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…

6.[leetcode] ZigZag Conversion

The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibility) P A H N A P L S I I G Y I R And then read line by line: "PAHNAPLSII…

【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 ZigZag Conversion（将字符串排成z字型）

class Solution { public: string convert(string s, int nRows) { string a=""; int len=s.length(); ) return s; //只有n个,不足一个周期||排成一行 -); //teams个完整的周期 -); //最后一个不足完整周期的元素数 ,i=,j=; ;i<nRows;i++){ k=i; ;j<teams;j++){ a+=s[k]; && i!=nRows-…

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…