664. 奇怪的打印机 有台奇怪的打印机有以下两个特殊要求: 打印机每次只能打印同一个字符序列. 每次可以在任意起始和结束位置打印新字符,并且会覆盖掉原来已有的字符. 给定一个只包含小写英文字母的字符串,你的任务是计算这个打印机打印它需要的最少次数. 示例 1: 输入: "aaabbb" 输出: 2 解释: 首先打印 "aaa" 然后打印 "bbb". 示例 2: 输入: "aba" 输出: 2 解释: 首先打印 "…

奇怪的打印机 有台奇怪的打印机有以下两个特殊要求: 打印机每次只能打印同一个字符序列. 每次可以在任意起始和结束位置打印新字符,并且会覆盖掉原来已有的字符. 给定一个只包含小写英文字母的字符串,你的任务是计算这个打印机打印它需要的最少次数. 示例 1: 输入: "aaabbb" 输出: 2 解释: 首先打印 "aaa" 然后打印 "bbb". 示例 2: 输入: "aba" 输出: 2 解释: 首先打印 "aaa&q…

There is a strange printer with the following two special requirements: The printer can only print a sequence of the same character each time. At each turn, the printer can print new characters starting from and ending at any places, and will cover t…

There is a strange printer with the following two special requirements: The printer can only print a sequence of the same character each time. At each turn, the printer can print new characters starting from and ending at any places, and will cover t…

题目: There is a strange printer with the following two special requirements: The printer can only print a sequence of the same character each time. At each turn, the printer can print new characters starting from and ending at any places, and will cov…

There is a strange printer with the following two special requirements: The printer can only print a sequence of the same character each time. At each turn, the printer can print new characters starting from and ending at any places, and will cover t…

请点击页面左上角 -> Fork me on Github 或直接访问本项目Github地址:LeetCode Solution by Swift    说明:题目中含有$符号则为付费题目. 如:[Swift]LeetCode156.二叉树的上下颠倒 $ Binary Tree Upside Down 请下拉滚动条查看最新 Weekly Contest!!! Swift LeetCode 目录 | Catalog 序        号 题名Title 难度     Difficulty  两数之…

动态规划篇 # 题名 刷题 通过率 难度 5 最长回文子串   22.4% 中等 10 正则表达式匹配   18.8% 困难 32 最长有效括号   23.3% 困难 44 通配符匹配   17.7% 困难 53 最大子序和 C#LeetCode刷题之#53-最大子序和(Maximum Subarray)-该题包含分治讨论 38.4% 简单 62 不同路径   49.5% 中等 63 不同路径 II   29.4% 中等 64 最小路径和   55.0% 中等 70 爬楼梯   40.8% 简单…

本文总结LeetCode上有动态规划的算法题,推荐刷题总数为54道.具体考点分析如下图: 1.中心扩展法 题号:132. 分割回文串 II,难度困难 2.背包问题 题号:140. 单词拆分 II,难度困难(最佳解法采用记忆化回溯) 题号:416. 分割等和子集,难度中等 题号:474. 一和零,难度中等 题号:638. 大礼包,难度中等(回溯法解决,分解为子问题,有动态规划的思路) 3.最短路径问题 矩阵空间,逆向动态规划 题号:174. 地下城游戏,难度困难 题号:312. 戳气球,难度困难,…

Hello everyone, I am a Chinese noob programmer. I have practiced questions on leetcode.com for 2 years. During this time, I studied a lot from many Great Gods' articles. After worship, I always wanted to write an article as they did, and now I take t…