Question 1

What exactly does this tool reverse?

Accepted Answer

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.

Question 2

Are negative signs and decimal points preserved?

Accepted Answer

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'.

Question 3

What is a practical use for number reversal?

Accepted Answer

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).

数字反转

输入

输出

常见问题