Python: Largest and smallest digit of a given number

Last update on April 17 2025 13:00:43 (UTC/GMT +8 hours)

Largest and Smallest Digits

Write a Python program to find the largest and smallest digits of a given number.

Sample Solution:

Python Code:

# Function to find the largest and smallest digits in a given number.
def Largest_Smallest_digit(n):
    # Initialize variables to store the largest and smallest digits.
    largest_digit = 0
    smallest_digit = 9

    # Loop through each digit in the number.
    while (n):
        # Extract the last digit.
        digit = n % 10

        # Update the largest digit.
        largest_digit = max(digit, largest_digit)

        # Update the smallest digit.
        smallest_digit = min(digit, smallest_digit)

        # Remove the last digit from the number.
        n = n // 10

    # Return the largest and smallest digits.
    return largest_digit, smallest_digit

# Example usage of the function with different numbers.
n = 9387422
print("Original Number:", n)
result = Largest_Smallest_digit(n)
print("Largest Digit of the said number:", result[0])
print("Smallest Digit of the said number:", result[1])

n = 500
print("\nOriginal Number:", n)
result = Largest_Smallest_digit(n)
print("Largest Digit of the said number:", result[0])
print("Smallest Digit of the said number:", result[1])

n = 231548
print("\nOriginal Number:", n)
result = Largest_Smallest_digit(n)
print("Largest Digit of the said number:", result[0])
print("Smallest Digit of the said number:", result[1])

Sample Output:

Original Number: 9387422
Largest Digit of the said number: 9
Smallest Digit of the said number: 2

Original Number: 500
Largest Digit of the said number: 5
Smallest Digit of the said number: 0

Original Number: 231548
Largest Digit of the said number: 8
Smallest Digit of the said number: 1

Explanation:

Here is a breakdown of the above Python code:

Function Definition:

def Largest_Smallest_digit(n):: Defines a function named Largest_Smallest_digit that takes an integer 'n' as input.

Variable Initialization:

largest_digit = 0: Initializes a variable to store the largest digit, starting with 0.
smallest_digit = 9: Initializes a variable to store the smallest digit, starting with 9.

While Loop:

while (n):: Enters a while loop that continues until the number becomes zero.

Digit Extraction:

digit = n % 10: Extracts the last digit of the number.

Update Largest and Smallest Digits:

largest_digit = max(digit, largest_digit): Updates the largest digit.
smallest_digit = min(digit, smallest_digit): Updates the smallest digit.

Number Modification:

n = n // 10: Removes the last digit from the number.

Return Statement:

return largest_digit, smallest_digit: Returns the largest and smallest digits.

Flowchart:

For more Practice: Solve these Related Problems:

Write a Python program to find the largest and smallest digit in a given integer by iterating through its digits.
Write a Python program to convert a number to a string and determine the maximum and minimum digit using built-in functions.
Write a Python program to extract digits from a number using list comprehension and compute the largest and smallest.
Write a Python program to calculate the maximum and minimum digits in an integer by comparing each digit in a loop.

Go to:

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Python Code Editor:

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