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 it’s not my lucky number
Sample Input 3:
Enter the car no:14
Sample Output 3:
14 is not a valid car number
Code :-
import java.util.*;
class LuckyNum{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int n,m,sum = 0;
System.out.println("Enter the car no:");
m = sc.nextInt();
if(m<1000){
System.out.println(m+" is not a valid car number");
}
else{
while(m>0){
n=m%10;
sum=sum+n;
m=m/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");
}
}
}
}