public static void main(String[] args) {
int a = 9;
int b = 18;
int c = 0;
while (a % b != 0) {
c = a %b;
a = b;
b = c;
}
System.out.println(c);
}
public static void main(String[] args) {
int a = 9;
int b = 18;
int c = 0;
while (a % b != 0) {
c = a %b;
a = b;
b = c;
}
System.out.println(c);
}