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 algorithm should run in O(n) complexity. 思路: 因为要不...
最长连续序列(Longest Consecutive Sequence) 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 algorithm should r...
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 algorithm should run in O(n) complexity. 利用一个hash表...
最长连续序列(Longest Consecutive Sequence) 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 algorithm should r...
The longest consecutive elements sequence is[1, 2, 3, 4]. Return its length:4. Your algorithm should run in O(n) complexity. 思路 求乱序数组中最长的可连续数字(位置不一定相邻)。 用hash存下数组的所有值。然后第二次遍历,对于每个数,从后往前每次加一检查是否存在于hash表中,存在则计数加一继续;...
sequence/description/ * * algorithms * Hard (42.52%) * Likes: 2119 * Dislikes: 106 * Total Accepted: 226.6K * Total Submissions: 532.5K * Testcase Example: '[100,4,200,1,3,2]' * * Given an unsorted array of integers, find the length of the longest * consecutive elements sequence....
给你一个未排序的数组,返回最长连续数字串的长度,这个数字串可以不连续存储。 二. 思路 代码: class Solution { public int longestConsecutive(int[] nums) { //step1: 把所有数字加到set里 Set<Integer> num_set = new HashSet<Integer>(); for (int num : nums) { num_set.add(num); } int res...
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...
Given an unsorted array of integersnums, return the length of the longest consecutive elements sequence. You must write an algorithm that runs inO(n)time. Example 1: Input: nums = [100,4,200,1,3,2]Output: 4Explanation: The longest consecutive elements sequence is[1, 2, 3, 4]. Therefo...
128. longest consecutive sequence 最长连续序列是一种在数据集中找到的最长的一段连续数据,它可以用来表示序列中的趋势和周期性。在机器学习和数据挖掘中,最长连续序列经常被用来预测未来的趋势和进行数据压缩。 对于一个数据集,最长连续序列可以用于许多不同的应用。例如,在金融领域中,最长连续序列可以用于预测股票...