Implement a data structure supporting the following operations:   Inc(Key) – Inserts a new k…

  A magical string S consists of only ‘1’ and ‘2’ and obeys the followi…

  Given an array with n integers, you need to find if there are triplets (i, j, k) which satisfies follow…

题目描述 Given an integer array of size n, find all elements that appear more than ⌊ n/3 ⌋ times. The algorithm sh…

Combination Sum I Given a set of candidate numbers (C) and a target number (T), find all unique combinations i…

Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. k is a posit…

本题考察的是最大子序列和 题目描述 在一条环路上有 N 个加油站，其中第 i 个加油站有汽油 gas[i] 升。 你有一辆油箱容量无限的的汽车，从第 i 个加油站开往第 i+1 个加油站需要消耗汽油 cost[i] 升。…

  Design a class to find the kth largest element in a stream. Note that it is the kth largest e…

  N couples sit in 2N seats arranged in a row and want to hold hands. We want to know the minimum number …

题目地址：https://leetcode-cn.com/probl…题目描述：字符串 S 由小写字母组成。我们要把这个字符串划分为尽可能多的片段，同一个字母只会出现在其中的一个片段。返回一个表示每个字符串片…

因为一直写的都是android程序，所以之前想用java文件去提交，弄了半天android studio，终于将java程序运行了起来，可是一查，却发现java运行效率是c语言的三分之一。 OK，开始查刷OJ用什么语言比…

题目网址：https://leetcode.com/problems/jewels-and-stones/description/ 大意：就是定义一个String J，这个String里面的每个character都是一种…