Counting Sort
Detailed guide and Python implementation for the 'Counting Sort' problem.
Problem Statement
Write a function counting_sort(arr) that sorts a list of non-negative integers arr using the Counting Sort algorithm. You may assume that the elements are integers in a small range [0, k]. The function should return the sorted list.
- •0 <= len(arr) <= 10^4
- •0 <= arr[i] <= 1000
Examples
arr = [4, 2, 2, 8, 3, 3, 1]
[1, 2, 2, 3, 3, 4, 8]
Frequencies of each element are counted, and cumulative counts are used to place elements in the sorted output array.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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