1.题目描述 2.问题分析 使的 A[i] = i+1 ,最后检查不满足这个条件的i+1 .即为缺失的值. 3.代码 vector<int> findDisappearedNumbers(vector<int>& nums) { ; i < nums.size() ; ++i ){ ] ){ swap( nums[i] , nums[nums[i] - ] ); i--; } } vector<int> result ; ; i < nums.siz…

problem 448. Find All Numbers Disappeared in an Array solution: class Solution { public: vector<int> findDisappearedNumbers(vector<int>& nums) { vector<int> res; ; i<nums.size(); i++) { ; nums[tmp] = nums[tmp]> ? -nums[tmp] : n…

这是悦乐书的第232次更新,第245篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第99题(顺位题号是448).给定一个整数数组,其中1≤a[i]≤n(n =数组的大小),一些元素出现两次,其他元素出现一次.找到[1,n]包含的所有元素,这些元素不会出现在此数组中.你可以在没有额外空间和O(n)运行时的情况下完成吗? 您可以假设返回的列表不计入额外空间.例如: 输入:[4,3,2,7,8,2,3,1] 输出:[5,6] 本次解题使用的开发工具是eclipse,jdk…

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 方法一:暴力求解 方法二:原地变负做标记 方法三:使用set 日期 [LeetCode] 题目地址:https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array/ Total Accepted: 14302 Total Submissions: 24993 Difficulty:…

Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements of [1, n] inclusive that do not appear in this array. Could you do it without extra space and in O(n) runtime?…

LeetCode--Find All Numbers Disappeared in an Array Question Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements of [1, n] inclusive that do not appear in this arr…

问题来源:Find All Numbers Disappeared in an Array 很久没有刷题了,感觉大脑开始迟钝,所以决定重拾刷题的乐趣.一开始不要太难,选一些通过率高的题目做,然后就看到了这个题目.我有些吃惊,这个题我虽然知道两种解法,但本身还是有难度的,居然通过率这么高.然后就搜索相关网页,看到一个和它很接近的题目<Find All Duplicates in an Array>,然后就释然了.这两个题目有相同的题干,只是问题略微不同,解法有相似之处.估计是因为题号太接近了,会…

后面3个题都是限制在1-n的,所有可以不先排序,可以利用巧方法做.最后两个题几乎一模一样. 217. Contains Duplicate class Solution { public: bool containsDuplicate(vector<int>& nums) { int length = nums.size(); ) return false; sort(nums.begin(),nums.end()); ;i < length;i++){ ]) return tr…

448. Find All Numbers Disappeared in an Array Easy Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements of [1, n] inclusive that do not appear in this array. Could…

题目: 448. Find All Numbers Disappeared in an Array Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements of [1, n] inclusive that do not appear in this array. Could…