Python: Test whether a given integer is pandigital number or not

Last update on April 17 2025 13:01:02 (UTC/GMT +8 hours)

Pandigital Number Checker

From Wikipedia,
In mathematics, a Pandigital number is an integer that in a given base has among its significant digits each digit used in the base at least once.
For example, 1223334444555556666667777777888888889999999990 is a Pandigital number in base 10. The first few Pandigital base 10 numbers are given by 1023456789, 1023456798, 1023456879, 1023456897, 1023456978, 1023456987, 1023457689.

Write a Python program to test whether a given integer is a Pandigital number or not.

Sample Solution:

Python Code:

# Define a function named is_pandigital_num that checks if a number (n) is a Pandigital number.
def is_pandigital_num(n):
    # Convert the number to a string, create a set from its digits, and check if the set has exactly 10 unique digits.
    return len(set(str(n))) == 10

# Test the function with different numbers and print the results.

# Test case 1
n = 1023456897
print("Original number:", n)
print("Check the said number is Pandigital number or not?")
print(is_pandigital_num(n))

# Test case 2
n = 1023456798
print("\nOriginal number:", n)
print("Check the said number is Pandigital number or not?")
print(is_pandigital_num(n))

# Test case 3
n = 1023457689
print("\nOriginal number:", n)
print("Check the said number is Pandigital number or not?")
print(is_pandigital_num(n))

# Test case 4
n = 1023456789
print("\nOriginal number:", n)
print("Check the said number is Pandigital number or not?")
print(is_pandigital_num(n))

# Test case 5
n = 102345679
print("\nOriginal number:", n)
print("Check the said number is Pandigital number or not?")
print(is_pandigital_num(n))

Sample Output:

Original number: 1023456897
Check the said number is Pandigital number or not?
True
Original number: 1023456798
Check the said number is Pandigital number or not?
True
Original number: 1023457689
Check the said number is Pandigital number or not?
True
Original number: 1023456789
Check the said number is Pandigital number or not?
True
Original number: 102345679
Check the said number is Pandigital number or not?
False

Explanation:

Here is a breakdown of the above Python code:

Function definition:

The code defines a function named "is_pandigital_num()" that checks if a given number (n) is a Pandigital number.

Conversion to String and Set Creation:

The function converts the number to a string, creates a set from its digits, and checks if the set has exactly 10 unique digits.

Flowchart:

For more Practice: Solve these Related Problems:

Write a Python program to check if a number is pandigital in base 10 by verifying it contains every digit from 0 to 9 at least once.
Write a Python program to determine if a given integer is pandigital by comparing its sorted digit string to a reference string.
Write a Python program to validate pandigital status by converting the number to a set and comparing with the set of all digits.
Write a Python program to test if a number is pandigital by checking the length of its unique digit set against 10.

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Python Code Editor:

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