Python Program to Condense a Number

Posted in Python Tutorial

Updated on Nov 22, 2024

By Mari Selvan

👁️ 112 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

🙋 Introduction

In the realm of programming, various tasks involve manipulating and transforming numbers. One interesting problem is condensing a number, which means reducing a number by summing its digits until a single-digit number is obtained. This process is often referred to as finding the digital root or digit sum.

In this tutorial, we will explore a Python program designed to condense a given number. The program involves repeatedly summing the digits of the number until a single-digit result is achieved.

📄 Example

Let's delve into the Python code that accomplishes this task.

condense_number.py

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# Function to condense a number
def condense_number(number):
    # Continue summing digits until a single-digit number is obtained
    while number > 9:
        _sum = 0

        # Sum the digits of the number
        while number > 0:
            _sum += number % 10
            number //= 10

        # Update the number with the sum
        number = _sum

    # Return the condensed number
    return number

# Driver program
if __name__ == "__main__":
    # Replace this value with the number you want to condense
    number = 9875

    # Call the function to condense the number
    condensed_number = condense_number(number)

    # Display the result
    print(f"The condensed form of {number} is: {condensed_number}")

💻 Testing the Program

To test the program with different numbers, modify the value of number in the code.

Output

The condensed form of 9875 is: 2

🧠 How the Program Works

The program defines a function condense_number that takes an integer number as input and condenses it by summing its digits until a single-digit result is obtained.
Inside the if __name__ == "__main__": block, replace the value of number with the desired number you want to condense.
The program calls the condense_number function and prints the result using print().

🧐 Understanding the Concept of Condensing a Number

Before delving into the code, let's understand the concept behind condensing a number. The process involves repeatedly summing the digits of the number until a single-digit result is achieved.

For example, consider the number 9875. The program would calculate 9 + 8 + 7 + 5 = 29, then 2 + 9 = 11, and finally 1 + 1 = 2. The condensed form is 2.