[LeetCode] 128. Longest Consecutive Sequence题目Given an unsorted array of integers, find the length of the longest consecutive elements sequence.Your algorithm should run in O(n) complexity. 样例Input: [100, 4, 200
The longest consecutive elements sequence is[1, 2, 3, 4]. Return its length:4. Your algorithm should run in O(n) complexity. 【题意】 给定一个未排序的整数数组。找长度最长的连续整数串序列。并返回长度。 复杂度要求O(n) 【思路】 O(n)不一定是one pass, 脑子里总是有这么种固定思维,自己给...
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 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...
LeetCode128. Longest Consecutive Sequence 记不得曾经 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: [1, 2, 3, 4] Example 2: Input: nums = [0,3,7,2,5,8,4...
LeetCode: 128. Longest Consecutive Sequence 题目描述 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, 3, 4...
packageleetcodeimport("/halfrost/LeetCode-Go/template")// 解法一 map,时间复杂度 O(n)funclongestConsecutive(nums[]int)int{res,numMap:=0,map[int]int{}for_,num:=rangenums{ifnumMap[num]==0{left,right,sum:=0,0,0ifnumMap[num-1]>0{left=numMap[num-1]}else{left=0}ifnumMap[num+1]...
1 对于nums中的每一个num,如果num-1存在,且长度是left,num+1存在,且长度是right,则新的长度就是left+right+1;通过dic.get函数,如...
int longestConsecutive(vector<int>& nums) { if (nums.empty()) return 0; set<int> s(nums.begin(), nums.end()); int res = 1; int count = 1; set<int>::iterator first = s.begin(); set<int>::iterator last = first++; while (last != s.end()) { if (*first+1 == *last...
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
LeetCode 128. Longest Consecutive Sequence 简介: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)。 Description Given an unsorted array of integers, find the length of the longest consecutive elements sequence. Your algorithm should run in O(n) complexity....