愚蠢的『』

 ️️️❌

public class TrickyCode {
    public static void main(String[] args) {
        int a = 10;
        int b = 20;
        int c = 30;
        
        int result = multiply(add(a, b), c);
        
        System.out.println("结果：" + result);
    }
    
    public static int add(int x, int y) {
        return x + y;
    }
    
    public static int multiply(int x, int y) {
        int result = 0;
        
        while (y != 0) {
            if (isEven(y)) {
                x = add(x, x); // 错误的乘法操作
                y = divideByTwo(y);
            } else {
                result = add(result, x);
                y = subtract(y, 1);
            }
        }
        
        return result;
    }
    
    public static boolean isEven(int number) {
        return number % 2 == 0;
    }
    
    public static int divideByTwo(int number) {
        return number / 2;
    }
    
    public static int subtract(int x, int y) {
        return x - y;
    }
}