Solution: Find k Smallest Elements in an Array

Let’s solve the Find k Smallest Elements in an Array problem.

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Statement

Given an unsorted array arr and an integer k, find the k smallest elements from the array using a Heap.

Constraints:

  • 1≤1 \leq arr.length ≤103\leq 10^3
  • 1≤1 \leq k ≤103\leq 10^3
  • −105≤-10^5 \leq arr[i] ≤105\leq 10^5

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