力扣.128 最长连续序列 leetcode longest-consecutive-sequence 老马啸西风 公众号:老马啸西风 1 人赞同了该文章 数组系列 力扣数据结构之数组-00-概览 力扣.53 最大子数组和 maximum-subarray 力扣.128 最长连续序列 longest-consecutive-sequence 力扣.1 两数之和 N 种解法 two-sum
LeetCode-Longest Consecutive Sequence 哎,这题又不会做,想了好久,还是想不出来,最长连续的数的长度,首先想到的肯定是排序,O(nlogn),不过题目要求是O(n), 于是又想到用hash的思想,类似数组记数的方式,不过即便不考虑存的空间的话,因为给定的数的大小并不在一定的范围之内, 所以最后的时间复杂度会是O(max -...
LeetCode—128.最长连续序列和[Longest Consecutive Sequence]——分析及代码[C++] 一、题目 二、分析及代码 1. 哈希表 (1)思路 (2)代码 (3)结果 三、其他 一、题目 给定一个未排序的整数数组,找出最长连续序列的长度。 要求算法的时间复杂度为 O(n)。 示例: 来源:力扣(LeetCode) 链接:http...leet...
LeetCode上的最长连续序列问题有哪些解法? Question : Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example, Given [100, 4, 200, 1, 3, 2], The longest consecutive elements sequence is [1, 2, 3, 4]. Return its length: 4. Your ...
Can you solve this real interview question? Longest Consecutive Sequence - Given an unsorted array of integers nums, return the length of the longest consecutive elements sequence. You must write an algorithm that runs in O(n) time. Example 1: Inp
力扣.128 最长连续序列 longest-consecutive-sequence 力扣.1 两数之和 N 种解法 two-sum 力扣.167 两数之和 II two-sum-ii 力扣.170 两数之和 III two-sum-iii 力扣.653 两数之和 IV two-sum-IV 力扣.015 三数之和 three-sum 题目 给定一个未排序的整数数组 nums ,找出数字连续的最长序列(不要求...
Explanation: The longest consecutive elements sequence is[1, 2, 3, 4]. Therefore its length is 4. 这道题要求求最长连续序列,并给定了O(n)复杂度限制,我们的思路是,使用一个集合HashSet存入所有的数字,然后遍历数组中的每个数字,如果其在集合中存在,那么将其移除,然后分别用两个变量pre和next算出其前一...
Leetcode之Longest Consecutive Sequence 问题 技术标签: java leetcode 面试 算法问题描述: Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example, Given [100, 4, 200, 1, 3, 2], The longest consecutive elements sequence is [1, 2, ......
LeetCode——Longest Consecutive Sequence Longest Consecutive Sequence 补充一些map的使用方法 begin,end,rbegin,rend。empty,clear,size。max_size 八个经常使用的函数. map.begin(); 是map的起始位置 map.end(); 是指map的尾部,没有实际元素. map.find(); 查找函数...
[LeetCode] 128. Longest Consecutive Sequence 求最长连续序列 Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example,Given [100, 4, 200, 1, 3, 2],The longest consecutive elements sequence is [1, 2, 3, 4]. Return its length: 4. ...