题目链接:https://leetcode.com/problems/find-peak-element/题目: A peak element is an element that is greater than its neighbors. num[i] ≠ num[i+1], find a peak element and return its index. The array may contain multiple peaks, in that case return the index to any one of the peak...
java代码如下: 1publicclassSolution {2publicintfindPeakElement(int[] num) {3intstart=0,end=num.length-1,mid=0,mid1=0;4while(start<end){5mid=(start+end)/2;6mid1=mid+1;7if(num[mid]<num[mid1]) start=mid1;8elseend=mid;9}10returnstart;11}12} 2、python: 1classSolution:2#@param...
直接想到的思路是,由于num[-1]是负无穷,因此num[0]对于它的previous neighbor是上升的,只需从num头开始遍历,找到第一个num[i] > num[i + 1]的数,那么i就是Peak Element; 算法虽然看上去已经很高效,但是,时间复杂度o(n); 代码: 1classSolution {2public:3intfindPeakElement(constvector<int> &num) {4...
A peak element is an element that is greater than its neighbors.Given an input arraynums, wherenums[i] ≠ nums[i+1], find a peak element and return its index.The array may contain multiple peaks, in that case return the index to any one of the peaks is fine. You may imagine that ...
https://leetcode.com/problems/find-peak-element/ 思路就是二分查找。如果mid在波峰的递减部分,那么e = mid - 1. 如果mid在波峰的递增部分,那么s = mid + 1. 如果mid在波峰,那么返回。 my code: 效率不高。 class Solution(object): def findPeakElement(self, nums): ...
【leetcode刷题笔记】Find Peak Element A peak element is an element that is greater than its neighbors. Given an input array wherenum[i] ≠ num[i+1], find a peak element and return its index. The array may contain multiple peaks, in that case return the index to any one of the ...
leetcode 【 Find Peak Element 】python 实现 题目: A peak element is an element that is greater than its neighbors. Given an input array wherenum[i] ≠ num[i+1], find a peak element and return its index. The array may contain multiple peaks, in that case return the index to any ...
For example, in array[1, 2, 3, 1], 3 is a peak element and your function should return the index number 2. Note: Your solution should be in logarithmic complexity. Solution1: Here is the O(n) solution. Accepted code: 1//1CE, 2WA, 1AC, how to achieve logN with unordered data?
Leetcode: Find Peak Element 题目: A peak element is an element that is greater than its neighbors. Given an input array where num[i] ≠ num[i+1], find a peak element and return its index. The array may contain multiple peaks, in that case return the index to any one of the peaks...
LeetCode Find Peak Element 1.题目 A peak element is an element that is greater than its neighbors. Given an input array where num[i] ≠ num[i+1], find a peak element and return its index. The array may contain multiple peaks, in that case return the index to any ...