217 - Contains Duplicate Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct. Solution 1: s…

[LeetCode]375. Guess Number Higher or Lower II 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址: https://leetcode.com/problems/guess-number-higher-or-lower-ii/description/ 题目描述: We are playing the Guess Game. The game is as f…

题目如下: We are given an array A of N lowercase letter strings, all of the same length. Now, we may choose any set of deletion indices, and for each string, we delete all the characters in those indices. For example, if we have an array A = ["abcdef&quo…

Difficulty: Hard  More:[目录]LeetCode Java实现 Description Similar to Question [Read N Characters Given Read4], but the read function may be called multiple times. Intuition 题意:本题与上一题的区别就是连续多次调用read()函数,所以需要将存储4个字符的缓存buffer定义为全局变量,此外全局变量还需要定义buffer[]中的开始…

Contains Duplicate Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct. 解法一: 排序,然后比较相邻元素是否相同…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 字典统计词频 使用set 排序 日期 [LeetCode] 题目地址:https://leetcode.com/problems/contains-duplicate/ Total Accepted: 86528 Total Submissions: 209877 Difficulty: Easy 题目描述 Given an array of int…

题目: Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct. 提示: 有两种思路: 对输入的数组进行排序,然后比较相邻元素的值是否一…

217. 存在重复元素 知识点:数组:Set: 题目描述 给定一个整数数组,判断是否存在重复元素. 如果存在一值在数组中出现至少两次,函数返回 true .如果数组中每个元素都不相同,则返回 false . 示例 示例1: 输入: [1,2,3,1] 输出: true 示例2: 输入: [1,2,3,4] 输出: false 示例3: 输入: [1,1,1,3,3,4,3,2,4,2] 输出: true 解法一:数组排序 其实可以直接对数组进行排序,然后直接对比前后两个元素即可,因为如果有一样的…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii/description/ 题目描述 Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers…

一.题目描述 Follow up for "Find Minimum in Rotated Sorted Array":What if duplicates are allowed? Would this affect the run-time complexity? How and why? Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 m…