【leetcode】1234. Replace the Substring for Balanced String

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【leetcode】1234. Replace the Substring for Balanced String

题目如下: You are given a string containing only 4 kinds of characters 'Q', 'W', 'E' and 'R'. A string is said to be balanced if each of its characters appears n/4 times where n is the length of the string. Return the minimum length of the substring that…

LeetCode 1234. Replace the Substring for Balanced String

原题链接在这里:https://leetcode.com/problems/replace-the-substring-for-balanced-string/ 题目: You are given a string containing only 4 kinds of characters 'Q', 'W', 'E' and 'R'. A string is said to be balanced if each of its characters appears n/4 times where…

【LeetCode】76. Minimum Window Substring

Minimum Window Substring Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n). For example,S = "ADOBECODEBANC"T = "ABC" Minimum window is "BANC". Note:If…

【LeetCode】387. First Unique Character in a String

Difficulty:easy More:[目录]LeetCode Java实现 Description https://leetcode.com/problems/first-unique-character-in-a-string/ Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s =…

【LeetCode】1047. Remove All Adjacent Duplicates In String 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栈日期题目地址:https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string/ 题目描述 Given a string S of lowercase letters, a duplicate removal consists of choosing two adjac…

【LeetCode】3 、Longest Substring Without Repeating Characters

题目等级:Medium 题目描述: Given a string, find the length of the longest substring without repeating characters. Example 1: Input: "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. Example 2: Input: "bbbbb…

【LeetCode】648. Replace Words 解题报告（Python & C++）

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 set 字典前缀树日期题目地址:https://leetcode.com/problems/replace-words/description/ 题目描述 In English, we have a concept called root, which can be followed by some other words to form an…

【LeetCode】5. Longest Palindromic Substring 最长回文子串

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 公众号:负雪明烛本文关键词:最长回文子串,题解,leetcode, 力扣,python, C++, java 目录题目描述题目大意解题方法暴力遍历动态规划日期题目地址:https://leetcode.com/problems/longest-palindromic-substring/description/ 题目描述 Given a string s, find t…

【LeetCode】5. Longest Palindromic Substring 最大回文子串

题目: Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. 思路:用Manacher算法得到最大回文子串的长度,得到带#的最大回文子串,用split剔除#后转化成String形式输出即可. public…

【leetcode】5. Longest Palindromic Substring

题目描述: Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. 解题分析: 之前百度实习生面试也被问到这个问题.这个题比较简单.就是在分别考虑对称字符字串为奇数和偶数的情况,在不超过字符串范围的情况下向…