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852. Peak Index in a Mountain Array. Medium. You are given an integer mountain array arr of length n where the values increase to a peak element and then decrease. Return the index of the peak element. Your task is to solve it in O(log(n)) time complexity. Example 1: Input: arr = [0,1,0] Output: 1. Example 2: Input: arr = [0,2,1,0] Output: 1.
1 2 3 4 5 6 7 8 9 10 11 12 13. class Solution: def (, arr: List [ ]) ->: l = 0 r = ( arr) - 1 while l < r: m = ( l + r) // 2 if arr [ m] >= arr [ m + 1 ]: r = m else: l = m + 1 return l. LeetCode Solutions in C++20, Java, Python, MySQL, and TypeScript.
Mar 31, 2018 · 852. Peak Index in a Mountain Array. Description. An array arr is a mountain if the following properties hold: arr.length >= 3. There exists some i with 0 < i < arr.length - 1 such that: arr[0] < arr[1] < ... < arr[i - 1] < arr[i] . arr[i] > arr[i + 1] > ... > arr[arr.length - 1]
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Problem Description. In this problem, we're given an array arr that represents a mountain, which means it has the shape of a peak: the elements first increase and then decrease. The constraints that define a mountain are: The length of the array should be at least 3.
Jul 22, 2023 · In this video I will be discussing Leetcode problem 852: Peak Index in a Mountain Array, explanation includes both intuition and approach, this video is part of playlist “Binary Search”. Show...
In this video, we'll delve into Leetcode problem 852, where we are given an array representing a mountain landscape, and our task is to find the peak index, i.e., the index where the mountain's...
