Question

我想将此函数编写为“ guessPasscode”，但认为我的代码不起作用。（其他功能是正确的）应该将0000〜9999中的每个数字都猜测为四位数的密码。

我运行了该函数，但它不会打印出任何内容，而且我也不认为该函数以我想要的方式工作。

var guess = "";
var guessCode ="";
function start() {
    var secretPasscode = generateRandomPasscode();
    guessPasscode(secretPasscode);


}

// Checks whether the given guess passcode is the correct passcode
function isCorrect(guessCode, correctCode) {
    return guessCode == correctCode;
}

// Generates a random 4 digit passcode and returns it as a String
function generateRandomPasscode() {
    var randomPasscode = "";

    for(var i = 0; i < 4; i++) {
        var randomDigit = Randomizer.nextInt(0, 9);
        randomPasscode += randomDigit;
    }

    return randomPasscode;
}
function guessPasscode(secretPasscode){
    for (var a = 0; a < 10; a++){
        guess += a;
        for (var b = 0; b < 10; b++){
            guess += b;
            for(var c = 0; c < 10; c++){
                guess += c;
                for (var d = 0; d < 10; d++){
                    guess += d;
                    if (isCorrect(guessCode, secretPasscode)){
                    println("Success!");
                    break;
                    }
                    guess = 0; //I am not sure about this line though
                }
            }
        }
    }
    if (isCorrect(guessCode, secretPasscode)){
        println("Success!");
    }
}

我希望它打印“成功”并在找到正确的密码后停止循环。

Answer 1

那些嵌套的循环实在太疯狂了，效率低得令人难以置信。如果您想从0到9999进行猜测，只需运行循环，然后将零填充到左侧即可。

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/padStart

for (let i = 0; i < 9999; i++) {
     let guess = String(i).padStart(4, '0')
     guessAnswer(guess)
     //whatever logic here to exit loop on correct guess
}

我如何才能使我的猜测密码代码循环起作用？

1 个答案: