1classSolution {2publicbooleanhasAllCodes(String s,intk) {3Set<String> set =newHashSet<>();4intn =s.length();5for(inti = 0; i <= n - k; i++) {6String str = s.substring(i, i +k);7set.add(str);8}9returnset.size() == (int) Math.pow(2, k);10}11} LeetCode 题目...
https://leetcode.com/problems/minimum-size-subarray-sum/ 题目: n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return 0 instead. [2,3,1,2,4,3]ands = 7, the subarray[4,3] click to show more pract...
最典型的就是岛屿问题(例如Number of Islands II),很适合使用联合查找 Union Find 来做,也叫并查集,LeetCode 中有很多道可以使用这个方法来做的题,比如Friend Circles,Graph Valid Tree,Number of Connected Components in an Undirected Graph,和Redundant Connection等等。
My Solutions to Leetcode problems. All solutions support C++ language, some support Java and Python. Multiple solutions will be given by most problems. Enjoy:) 我的Leetcode解答。所有的问题都支持C++语言,一部分问题支持Java语言。近乎所有问题都会提供多个算
LeetCode 144. Binary Tree Preorder Traversal 才5%的内存。(⊙﹏⊙),如果不写free是8.7,写了free是9.6 代码 后面改成循环,不知道会怎么样? 智能推荐 web打印lodop预览报错Error:papage size(W:0 H:0) invalid解决 客户使用lodop打印时,打印预览出现Error:papage size(W:0 H:0) invalid! 确保客户安装包...
961. N-Repeated Element in Size 2N Array # 题目 # In a array A of size 2N, there are N+1 unique elements, and exactly one of these elements is repeated N times. Return the element repeated N times. Example 1: Input: [1,2,3,3] Output: 3 Example 2: Inpu
Leetcode_654 Maximum Binary Tree tree bythegivenarrayandoutputtheroot nodeofthis tree. Example 1: Note:Thesizeofthe...即可解决,执行时间为66ms。 题目:Givenanintegerarraywith no duplicates.Amaximum tree building on thisarray 问题描述:Givenanarrayconsistingofnintegers,findthecontiguoussubarrayofgivenleng...
https://leetcode.com/problems/minimum-size-subarray-sum/ 题目描述 Given an array of n positive integers and a positive integer s, find the minimal length of acontiguoussubarray of which the sum ≥ s. If there isn’t one,...
[LeetCode] Minimum Size Subarray Sum Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return 0 instead. For example, given the array[2,3,1,2,4,3]ands = 7,...
今天介绍的是LeetCode算法题中Easy级别的第227题(顺位题号是961)。在大小为2N的数组A中,存在N+1个唯一元素,并且这些元素中的一个重复N次。 返回重复N次的元素。例如: 输入:[1,2,3,3] 输出:3 输入:[2,1,2,5,3,2] 输出:2 输入:[5,1,5,2,5,3,5,4] ...