728. 自除数 自除数 是指可以被它包含的每一位数除尽的数. 例如,128 是一个自除数,因为 128 % 1 == 0,128 % 2 == 0,128 % 8 == 0. 还有,自除数不允许包含 0 . 给定上边界和下边界数字,输出一个列表,列表的元素是边界(含边界)内所有的自除数. 示例 1: 输入: 上边界left = 1, 下边界right = 22 输出: [1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 15, 22] 注意: 每个输入参数的边界满足 1 <…

题目链接:https://leetcode-cn.com/problems/self-dividing-numbers/ 给定上边界和下边界数字,输出一个列表,列表的元素是边界(含边界)内所有的自除数. 示例 1: 输入: 上边界left = 1, 下边界right = 22输出: [1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 15, 22]注意: 每个输入参数的边界满足 1 <= left <= right <= 10000. /** * Note: The…

前文传送门: C#刷遍Leetcode面试题系列连载(1) - 入门与工具简介 C#刷遍Leetcode面试题系列连载(2): No.38 - 报数 系列教程索引 传送门:https://enjoy233.cnblogs.com/articles/leetcode_csharp_index.html C#刷遍Leetcode面试题系列连载(1) - 入门与工具简介 C#刷遍Leetcode面试题系列连载(2): No.38 - 报数 C# 刷遍 Leetcode 面试题系列连载(3): No.7…

The set [1,2,3,…,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order, We get the following sequence (ie, for n = 3): "123" "132" "213" "231" "312" "…

Implement wildcard pattern matching with support for '?' and '*'. '?' Matches any single character. '*' Matches any sequence of characters (including the empty sequence). The matching should cover the entire input string (not partial). The function p…

Find all possible combinations of k numbers that add up to a number n, given that only numbers from 1 to 9 can be used and each combination should be a unique set of numbers. Ensure that numbers within the set are sorted in ascending order. Example 1…

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 "aaacecaaa&qu…

Given a 2D board and a list of words from the dictionary, find all words in the board. Each word must be constructed from letters of sequentially adjacent cell, where "adjacent" cells are those horizontally or vertically neighboring. The same le…

Design a data structure that supports the following two operations: void addWord(word)bool search(word) search(word) can search a literal word or a regular expression string containing only letters a-z or .. A . means it can represent any one letter.…

There are a total of n courses you have to take, labeled from 0 to n - 1. Some courses may have prerequisites, for example to take course 0 you have to first take course 1, which is expressed as a pair: [0,1] Given the total number of courses and a l…