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dscataglini/reordering number descending

Created February 2, 2022 22:37
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reordering number descending
Your task is to make a function that can take any non-negative integer as an argument and return it with its digits in descending order.
Essentially, rearrange the digits to create the highest possible number.
Examples:
Input: 42145 Output: 54421
Input: 145263 Output: 654321
Input: 123456789 Output: 987654321
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