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Grokking the Coding Interview Patterns in Python

Solution: Sort Array by Increasing Frequency

Explore how to sort an array based on the frequency of its elements, with ties broken by descending value order. Understand how to efficiently use Python's Counter to build frequency maps and apply composite sorting criteria to solve this problem effectively.

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Statement

Given an array of integers nums, sort the array in increasing order based on the frequency of each value. If multiple values share the same frequency, sort those values in decreasing order.

Return the sorted array.

Constraints:

  • 1≤1 \leq nums.length ≤100\leq 100

  • −100≤-100 \leq ...