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 peaks is fine.
You may imagine thatnum[-1] = num[n] = -∞.
For example, in array[1, 2, 3, 1], 3 is a peak element and your function should return the index number 2.
logn的时间复杂度 二分查找
LeetCode 162. Find Peak Element Description A peak elemen...
162. Find Peak Element https://leetcode.com/problems/find...
题目分析 A peak element is an element that is greater than it...
这道题快到让我怀疑自我，代码如下： 当然是要怀疑自我的，因为最好的办法还是二分查找呀，代码如下：
/*第一个数和最后一个数都小于其相邻数，所以数组一定存在峰值。考虑使用二分法，取中间值后有以下几种情况：中间值比其...
A peak element is an element that is greater than its nei...
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A peak element is an element that is greater than its nei...
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本文标题：162. Find Peak Element
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