Java方法:整数包含1

public class IntegerContainsOne {
    public static boolean containsOne(int num) {
        while (num != 0) {
            if (num % 10 == 1) {
                return true;
            }
            num /= 10;
        }
        return false;
    }

    public static void main(String[] args) {
        int num = 12345;
        if (containsOne(num)) {
            System.out.println(num + " contains digit 1.");
        } else {
            System.out.println(num + " does not contain digit 1.");
        }
    }
}