题解 | #寻找峰值#

# 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: List[int]) -> int:
        a=1
        d=-2
        if len(nums)==1:
            return 0
        if len(nums)==2:
            if nums[0]>nums[1]:
                return 0
            else:
                return 1
        for i in range(len(nums)-2):
            a1 = nums[i]
            a2 = nums[i+a]
            a3 = nums[i+2]
            b1 = nums[-1-i]
            b2 = nums[d-i]
            b3 = nums[-3-i]
            if a1<a2>a3 :
                return i+a
            if b1<b2>b3:
                return len(nums)+d-i
        if nums[len(nums)-1]==max(nums):
            return len(nums)-1
        else:
            return 0
            
        # write code here