Grokking Data Structures & Algorithms for Coding Interviews
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Reduction Operations to Make the Array Elements Equal (medium)
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Problem Statement

Given an array of integers nums, return the number of operations required to make all elements in nums equal. To perform one operation, you can follow the below steps:

  • Select the maximum element of nums. If there are multiple occurrences of the maximum element, choose the element which has lowest index i.
  • Select the second largest element of nums.
  • Replace the element at index i with the second largest element.

Examples

Example 1:

  • Input: [3, 5, 5, 2]
  • Expected output: 5
  • Justification:

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