热带雨林

摘要： Given an integer array nums of size n, return the minimum number of moves required to make all array elements equal. In one move, you can increment or 阅读全文

摘要： Given a list paths of directory info, including the directory path, and all the files with contents in this directory, return all the duplicate files 阅读全文

摘要： There are several cards arranged in a row, and each card has an associated number of points The points are given in the integer array cardPoints. In o 阅读全文

摘要： Let's say a positive integer is a super-palindrome if it is a palindrome, and it is also the square of a palindrome. Given two positive integers left  阅读全文

摘要： Given an array nums with n integers, your task is to check if it could become non-decreasing by modifying at most one element. We define an array is n 阅读全文

摘要： There are n different online courses numbered from 1 to n. You are given an array courses where courses[i] = [durationi, lastDayi] indicate that the i 阅读全文

摘要： Design a special dictionary which has some words and allows you to search the words in it by a prefix and a suffix. Implement the WordFilter class: Wo 阅读全文

摘要： Given three integers x, y, and bound, return a list of all the powerful integers that have a value less than or equal to bound. An integer is powerful 阅读全文

摘要： Let's call an array arr a mountain if the following properties hold: arr.length >= 3 There exists some i with 0 < i < arr.length - 1 such that: arr[0] 阅读全文

摘要： Given a list of sorted characters letters containing only lowercase letters, and given a target letter target, find the smallest element in the list t 阅读全文