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. 代码: 分别用递归和非递归两种方法实现。 非递归版代码:oj测试通过 Runtime: 55 ms 1classSolution:2#@param num, a list of i...
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...
2. Python class Solution: #@param A: An integers list. #@return: return any of peek positions. def findPeak(self, A): # write your code here if A is None or len(A) == 0: return 0 left = 0 right = len(A) - 1 while(left < right): mid = left + (right-left)/2 if A...
Can you solve this real interview question? Find Peak Element - A peak element is an element that is strictly greater than its neighbors. Given a 0-indexed integer array nums, find a peak element, and return its index. If the array contains multiple pea
解决思路一Python实现 class Solution: def findPeakElement(self, nums: List[int]) -> int: for i in range(0,len(nums)-1): if(nums[i] > nums[i+1]): return i return len(nums)-1 1. 2. 3. 4. 5. 6. 解决思路二 在思路一中提到,nums数组可以看成多段局部升序序列、局部降序序列的组...
A peak element is an element that is greater than its neighbors.Given an input array nums, where nums[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....
num[-1] = num[n] = -∞.[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. 思路: 可能包含多个极值点(peak),只要取任意一个就行。假设只有一个peak,用二分查找根据mid元素单增单减的关系可以判...
方法都是一样的,就是先得找到peak element的点,然后根据peak点将整个数组分成几部分,对于每个部分来说,是单调的,所以可以对每个部分分别用binary search来找元素。 复杂度 time: O(logn), space: O(1) 代码 public class Solution { public int findPeakElement(int[] nums) { ...
Explanation: Your function can return either index number 1 where the peak element is 2, or index number 5 where the peak element is 6. Note: Your solution should be in logarithmic complexity. 描述 峰值元素是指其值大于左右相邻值的元素。
:pencil2: 算法相关知识储备 LeetCode with Python :books:. Contribute to cancanxinxin/leetCode development by creating an account on GitHub.