Python program to find reverse of a number

Hello every one, welcome back ! Here we will learn a simple python logic to reverse a number.

Here we read a number from user and reverse that number using some arithmetic operations like mod (%) and floor division (//) to find each digit and build the reverse of it.
We can also do this in a efficient way by using slice operations, reversing a number using slice is discussed in previous post.

Program on Github

Reverse a number – Code Visualization

Task :

To reverse a given integer number.

Approach :

  1. Read an input number using input() or raw_input().
  2. Check whether the value entered is integer or not.
  3. Check integer is greater than 0
  4. Initialise a variable named reverse to 0
  5. Find remainder of the input number by using mod (%) operator
  6. Now multiply reverse with 10 and add remainder to it
  7. Floor Divide input number with 10
  8. At some point input number will become 0
  9. Repeat steps 5, 6, 7 until input number is not greater than zero
  10. Print the variable reverse.

Program on Github

Program :

Output :

Reverse an integer number - programminginpython.com
Reverse an integer number – programminginpython.com
Reverse an integer number - programminginpython.com
Reverse an integer number – programminginpython.com
Reverse an integer number - programminginpython.com
Reverse an integer number – programminginpython.com

Program on Github

One Comment

  1. Pingback: Python program to find reverse of a number using slice - Programming in Python

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