1071. 字符串的最大公因子 1071. Greatest Common Divisor of Strings 题目描述 对于字符串 S 和 T,只有在 S = T + ... + T(T 与自身连接 1 次或多次)时,我们才认定 "T 能除尽 S". 返回字符串 X,要求满足 X 能除尽 str1 且 X 能除尽 str2. 每日一算法2019/6/17Day 45LeetCode1071. Greatest Common Divisor of Strings 示例 1: 输入:s…
本文是个人对LeetCode中字符串类型题目的总结,纯属个人感悟,若有不妥的地方,欢迎指出. 一.有关数字 1.数转换 题Interger to roman和Roman to integer这两题是罗马数字和整数之间的相互转换,首先要懂得什么是罗马数字以及相应的组数规则.LeetCode的题中给出的数字最大的是3999,.针对第一题有两种解法:第一是列举出罗马数字在个十百千上的各种情况,形成一个二维矩阵,然后对整数不停的取余.除10来确定相应的罗马数字:第二种是先列出罗马数字组成情况,然后通过从…
题目链接 题目要求: Given a string S, you are allowed to convert it to a palindrome by adding characters in front of it. Find and return the shortest palindrome you can find by performing this transformation. For example: Given "aacecaaa", return "a…
344. Reverse String Write a function that takes a string as input and returns the string reversed. Example: Given s = "hello", return "olleh". Subscribe to see which companies asked this question public class Solution { public String r…
题目: 给定一个字符串,找到它的第一个不重复的字符,并返回它的索引.如果不存在,则返回 -1. Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. 案例: s = "leetcode" 返回 0. s = "loveleetcode", 返回 2. 注意事项:您可以假定该字符串只包含小写字…
387. 字符串中的第一个唯一字符 给定一个字符串,找到它的第一个不重复的字符,并返回它的索引.如果不存在,则返回 -1. 案例: s = "leetcode" 返回 0. s = "loveleetcode", 返回 2. 注意事项:您可以假定该字符串只包含小写字母. class Solution { public int firstUniqChar(String s) { //fast int n = s.length(); for(int i = 'a'; i…
题目:Given a string s, partition s such that every substring of the partition is a palindrome. Return the minimum cuts needed for a palindrome partitioning of s. For example, given s = "aab",Return 1 since the palindrome partitioning ["aa&quo…
题目链接 题目要求: 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: "…
题目链接 题目要求: Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example: Given "25525511135", return ["255.255.11.135", "255.255.111.35"]. (Order does not matter) 本题的解…
题目链接 题目要求: Validate if a given string is numeric. Some examples: "0" => true " 0.1 " => true "abc" => false "1 a" => false "2e10" => true Note: It is intended for the problem statement to be…