[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, 1, 3, 2] Output: 4 Explanation: The longest consecutive elements sequence ...
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 run in O(n) ...
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
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...
public int longestConsecutive(int[] nums) { if(nums.length == 0) { return 0; } // 排序 Arrays.sort(nums); int maxLen = 1; int tempLen = 1; // 对于连续的定义是什么? for(int i = 1; i < nums.length; i++) { int num = nums[i]; ...
[LeetCode]Longest Consecutive Sequence 题目大意 给定一个整形数组,求出最长的连续序列。例如数组[100,4,200,1,3,2],最长的连续序列长度为[1,2,3,4],长度为4。要求时间复杂度为O(n)。 思路 "排序转换成经典的动态规划问题"的话排序至少需要时间复杂度为O(nlog(n))——pass...
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...
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...
思路1 排序, 然后遍历. 时间复杂度O(NlogN) intlongestConsecutive(vector<int>&nums){if(nums.empty())return0;sort(nums.begin(),nums.end());intres=1;intcount=1;for(inti=1;i<nums.size();i++){if(nums[i]==nums[i-1]){continue;}elseif(nums[i]==nums[i-1]+1){count++;if(count>...
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 ...