#347 Top K Frequent Elements

Medium Acceptance 0%

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Problem Description

Given an integer array `nums` and an integer `k`, return the `k` most frequent elements. You may return the answer in any order.

1 <= nums.length <= 10^5
-10^4 <= nums[i] <= 10^4
k is in the range [1, the number of unique elements in the array].

Case #1

In: nums = [1,1,1,2,2,3] k = 2

Out: [1,2]

Case #2

In: nums = [1] k = 1

Out: [1]

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