#coding:utf-8
#
# 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
#
# 
# @param nums int整型一维数组 
# @return int整型
#
class Solution:
    def findPeakElement(self , nums ):
        # write code here
        left = 0
        right = len(nums) - 1
        while left < right:
            mid = right + (left - right) // 2
            #y右边是往下，不一定有波峰
            if nums[mid] > nums[mid + 1]:
                right = mid
            else:
                left = mid + 1

        return right