Reversing a number is a common problem in computer science. It involves taking an integer and reversing its digits. For example, reversing the number 12345 would give 54321. Below is a simple pseudocode that demonstrates how to reverse a given number.
Pseudocode:
1. Start
2. Initialize a variable, reversed_number, to 0
3. Input the number to be reversed as n
4. While n is greater than 0, repeat the following steps:
- Extract the last digit of n by calculating digit = n % 10
- Update the reversed_number by multiplying it by 10 and adding the digit: reversed_number = reversed_number * 10 + digit
- Remove the last digit from n by performing integer division: n = n // 10
5. Output the reversed_number
6. End
This pseudocode illustrates the steps involved in reversing the digits of a number. The process iteratively extracts the last digit, appends it to the reversed number, and removes the last digit from the original number until no digits are left.