使用數組存儲多個用戶生成的整數

Question

實施例的描述

我是Java的新手，我正在試圖弄清楚如何做這個例子。 我原計划將3個用戶猜測存儲到一個名為UserGuess的數組中，並將3個嘗試的猜測存儲在另一個數組中，但我對如何將USER輸入存儲到數組中感到困惑（我只使用固定數字） 。 我也很困惑，如果UserGuess數組的整數等於嘗試猜測的整數，我將如何寫出，會出現一個消息框，表明鎖被打開或者嘗試的猜測是錯誤的。

package ComboLockerDrive;

import javax.swing.JOptionPane;

公共類ComboLockerDrive {

public static void main(String[] args) {




    int digit1 = Integer.parseInt(JOptionPane.showInputDialog("Enter the first digit of your locker combo: "));
    int digit2 = Integer.parseInt(JOptionPane.showInputDialog("Enter the second digit of your locker combo: "));
    int digit3 = Integer.parseInt(JOptionPane.showInputDialog("Enter the third digit of your locker combo: "));
    System.out.println("The code has been set!");

     int[] combination = new int[3];
     combination[0] = digit1;
     combination[1] = digit2;
     combination[2] = digit3;

     System.out.println("Now we will try and open the lock!");

     int[] attemptedGuess = new int[3];

     int Guess1 = Integer.parseInt(JOptionPane.showInputDialog("Enter your first guess: "));
     int Guess2 = Integer.parseInt(JOptionPane.showInputDialog("Enter your second guess: "));
     int Guess3 = Integer.parseInt(JOptionPane.showInputDialog("Enter your third guess: "));

     attemptedGuess[0] = Guess1;
     attemptedGuess[1] = Guess2;
     attemptedGuess[2] = Guess3;

     if(combination == attemptedGuess) {
         System.out.println("The lock opened, congratulations, you got the combination right!");
     } 

     else {
         System.out.println("The lock does not open, the combination you tried was incorrect");
     }


}

}

這是我到目前為止，沒有任何錯誤，但當我輸入正確的組合時，它表示組合是不正確的。 這是否意味着我沒有正確填充陣列？

Answer 1

你不能僅僅為了相等而匹配兩個數組，就像當你做combination == attemptedGuess你試圖匹配總是不同的引用。 相反，您應匹配索引處的各個元素。

您基本上可以匹配所有數字，如果其中一個不匹配，您可以說組合不正確，否則它是正確的。

這樣的事情：替換代碼

if(combination == attemptedGuess) {
     System.out.println("The lock opened, congratulations, you got the combination right!");
 } 
 else {
     System.out.println("The lock does not open, the combination you tried was incorrect");
 }

有了這個

        for(int i=0;i<3;i++){
            if(attemptedGuess[i]!=combination[i]){
                System.out.println("The lock does not open, the combination you tried was incorrect");
                return;
            }
        }
        System.out.println("The lock opened, congratulations, you got the combination right!");

或者只是按照@sam的建議

if(Arrays.equals(attemptedGuess, combination)){
    System.out.println("The lock opened, congratulations, you got the combination right!");
}else{
    System.out.println("The lock does not open, the combination you tried was incorrect");
}