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Longest Mountain in Array
You may recall that an array arr is a mountain array if and only if: Given an integer array arr, return the length of the longest subarray, which is a mountain.
You may recall that an array arr is a mountain array if and only if:
Given an integer array arr, return the length of the longest subarray, which is a mountain. Return 0 if there is no mountain subarray.
Follow up:
Example 1
Input: arr = [2,1,4,7,3,2,5]
Output: 5
Explanation: The largest mountain is [1,4,7,3,2] which has length 5.
Example 2
Input: arr = [2,2,2]
Output: 0
Explanation: There is no mountain.
Constraints
- 1 <= arr.length <= 10^4
- 0 <= arr[i] <= 10^4
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