Quicksort with equal element values.

In a world where data is king, a peculiar phenomenon has been observed in the realm of sorting algorithms. It appears that when a list of integers contains multiple instances of the same value, the quicksort algorithm behaves in a unique manner. The task at hand is to investigate this behavior and determine whether a given list of integers can be sorted using the quicksort algorithm with equal element values.

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

Quicksort with equal element values.

In a world where data is king, a peculiar phenomenon has been observed in the realm of sorting algorithms. It appears that when a list of integers contains multiple instances of the same value, the quicksort algorithm behaves in a unique manner. The task at hand is to investigate this behavior and determine whether a given list of integers can be sorted using the quicksort algorithm with equal element values.