Finding Non Repeating elements in an Array
Detailed guide and Python implementation for the 'Finding Non Repeating elements in an Array' problem.
Problem Statement
Write a function find_non_repeating(arr) that takes a list of integers arr and returns a sorted list of all elements that appear exactly once in the array. If no such element exists, return an empty list.
- •0 <= len(arr) <= 10^5
- •-10^6 <= arr[i] <= 10^6
Examples
arr = [1, 2, 3, 2, 4, 3]
[1, 4]
1 appears once and 4 appears once. 2 and 3 each appear twice.
arr = [5, 5, 5]
[]
5 appears 3 times. No element appears exactly once.
arr = [7, 8, 9]
[7, 8, 9]
All elements appear exactly once.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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