Sorting variable-length items: sort strings of different lengths in O(n) time.

Analyze the sorting variable-length items: sort strings of different lengths in o(n) time..

Examples
Input: "test_input_1"
Output: "output_1"
Hints

Sorting variable-length items: sort strings of different lengths in O(n) time.

Analyze the sorting variable-length items: sort strings of different lengths in o(n) time..