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Number Reverser
Input
Output
Run process to generate output.
Frequently Asked Questions
What exactly does this tool reverse?
It reverses the digit sequence of each number found in the text. '12345' becomes '54321'. Leading zeros are preserved in the output. Decimal points: '3.14' becomes '41.3' (reverses digits, preserving decimal position) or treats the full number as a digit string depending on mode.
Are negative signs and decimal points preserved?
The minus sign is kept at the front; digits are reversed. For '−123', output is '−321'. Decimal handling varies by configuration: either the decimal point stays in position or the full '3.14' string is reversed to '41.3'.
What is a practical use for number reversal?
Programming puzzles, digit manipulation exercises, checking palindromic numbers, and certain encoding challenges. For example, determining if a number is a palindrome (121 reversed is 121 — a palindrome; 123 reversed is 321 — not).