- Difficulty: Medium
- Tags: LeetCode, Medium, Stack, Array, Monotonic Stack, leetcode-2832, O(n), 🔒, Mono Stack
Problem
You are given a 0-indexed array nums
of distinct integers.
Let us define a 0-indexed array ans
of the same length as nums
in the following way:
ans[i]
is the maximum length of a subarraynums[l..r]
, such that the maximum element in that subarray is equal tonums[i]
.
Return the array ans
.
Note that a subarray is a contiguous part of the array.
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Example 1:
Input: nums = [1,5,4,3,6] Output: [1,4,2,1,5] Explanation: For nums[0] the longest subarray in which 1 is the maximum is nums[0..0] so ans[0] = 1. For nums[1] the longest subarray in which 5 is the maximum is nums[0..3] so ans[1] = 4. For nums[2] the longest subarray in which 4 is the maximum is nums[2..3] so ans[2] = 2. For nums[3] the longest subarray in which 3 is the maximum is nums[3..3] so ans[3] = 1. For nums[4] the longest subarray in which 6 is the maximum is nums[0..4] so ans[4] = 5.
Example 2:
Input: nums = [1,2,3,4,5] Output: [1,2,3,4,5] Explanation: For nums[i] the longest subarray in which it's the maximum is nums[0..i] so ans[i] = i + 1.
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Constraints:
1 <= nums.length <= 105
1 <= nums[i] <= 105
- All elements in
nums
are distinct.