Question

How to check if a number is pandigital in Java

Answer 1

import java.util.Arrays;

// pandigital = a number that makes use of all the digits to exactly once
// for example 15234 is 1 through 5 pandigital

public class Program
{
	public static boolean IsPandigital(int num) {
		char[] array = String.valueOf(num).toCharArray();
		Arrays.sort(array);

		int number1 = (int)Character.getNumericValue(array[0]);

		for (int i = 1; i < array.length; i++) {
			int number2 = (int)Character.getNumericValue(array[i]);
			if (number2 != number1 + 1) {
				return false;
			}
			number1 = number2;
		}

		return true;
	}

	public static void main(String args[]) {
		int num = 152634;

		if (IsPandigital(num)) {
			System.out.println("Yes");
		}
		else {
			System.out.println("No");
		}
	}
}



/*
run:
  
Yes
  
*/

 

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