Grokking Data Structures & Algorithms for Coding Interviews

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Max of All Subarrays of Size 'k' (medium)

Problem Statement

Given an integer array arr and an integer k, return the result list containing the maximum for each and every contiguous subarray of size k.

In other words, result[i] = max(arr[0],..., arr[k]), result[1] = max(arr[1],...arr[k+1]), etc.

Examples

Example 1

  • Input: arr = [1, 2, 3, 1, 4, 5, 2, 3, 6], k = 3
  • Output: [3, 3, 4, 5, 5, 5, 6]
  • Description: Here, subarray [1,2,3] has maximum 3, [2,3,1] has maximum 3, [3,1,4] has maximum 4, [1,4,5] has maximum 5, [4,5,2] has maximum 5, [5,2,3] has maximum 5, and

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