In this post, we will learn Lucky Number Program in java Programming language.
Question:
William planned to choose a four digit lucky number for his car. His lucky numbers are 3,5 and 7. Help him find the number, whose sum is divisible by 3 or 5 or 7.
Provide a valid car number, Fails to provide a valid input then display that number is not a valid car number.
Note : The input other than 4 digit positive number[includes negative and 0] is considered as invalid.
Refer the samples, to read and display the data.
Sample Input 1:
Enter the car no:1234
Sample Output 1:
Lucky Number
Sample Input 2:
Enter the car no:1214
Sample Output 2:
Sorry its not my lucky number
Sample Input 3:
Enter the car no:14
Sample Output 3:
14 is not a valid car number
Lucky Number Program in java CODE:–
import java.util.Scanner; public class LuckyNum { public static void main (String[] args) { Scanner sc= new Scanner(System.in); System.out.println("Enter the car no:"); int num=sc.nextInt(); if(num<1000 || num>9999) { System.out.println(num+" is not a valid car number"); } else {int sum=0; while(num>0) { sum+=num%10; num/=10; } if(sum%3==0 || sum%5==0 || sum%7==0) { System.out.println("Lucky Number"); } else { System.out.println("Sorry its not my lucky number"); } } } }