我在做24小時制

Question

我做了24小時制。我有下面的代碼。我的問題是int[]時間等於[0, 0, 0]並在每次迭代中打印出來。
更多可能對您有幫助的信息。我的Array TimeCounter爲[hours, minutes, seconds]。重置方法將選定的int值設置爲零，保持不變或增加1。嵌套的while循環用於通過時鐘。

public static int hours; 
public static int minutes; 
public static int seconds; 
public static int [] TimeCounter = {hours, minutes, seconds}; 

//End of day 
public static void reset(int [] midNight){ 
    hours = 0; 
    minutes = 0; 
    seconds = 0; 
} 

//End of a minute 
public static void resetSeconds(int [] endOfMin){ 
    minutes++; 
    seconds = 0; 
} 

//End of a Hour 
public static void resetMinutes(int [] endOfHour){ 
    hours++; 
    minutes = 0; 
    seconds = 0; 
} 
public static void run(int [] time){ 
    hours = 0; 
    minutes = 0; 
    seconds = 0; 
    System.out.println(Arrays.toString(time)); 
    while (hours < 25){ 
     if (hours == 24){ 
      if (minutes == 59){ 
       if (seconds == 60){ 
        reset(time); 
       } 
      } 
     } 
     while (minutes < 61){ 
      if (minutes == 59){ 
       if (seconds == 60){ 
        resetMinutes(time); 
        System.out.println(Arrays.toString(time)); 
       } 
      } 
      while (seconds < 61){ 
       if (seconds == 60){ 
        resetSeconds(time); 
       } 
       System.out.println(Arrays.toString(time)); 
       seconds++; 

      } 
      System.out.println(Arrays.toString(time)); 
      minutes++; 
     } 
     System.out.println(Arrays.toString(time)); 
     hours++; 
    } 

} 

public static void main(String[] args){ 

    run(TimeCounter); 
} 

Answer 1

數組保存的整數與變量中的整數並不相同。是的，你用變量初始化數組，但在此之後，數組int項是獨立的。如果你想在數組中增加一個int項目，你必須直接這樣做：myArray[someIndex]++。

順便說一句，根據我的評論，你不允許在這個程序中使用面向對象的概念嗎？這些指導是否強制你使用靜態的一切？我問這個問題的原因是因爲一個好得多的程序不會像你這樣使用數組，而是在秒，分和小時內都會有int字段，並且封裝了幾秒到幾分鐘到幾個小時的邏輯。這將是多更容易維護和提高。

---

編輯
例如：

public class FooClock { 
    public static final int SECONDS_PER_MINUTE = 60; 
    public static final int MINUTES_PER_HOUR = 60; 
    private static final int NOON = 12; 
    private int hours; 
    private int minutes; 
    private int seconds; 
    private boolean am = true; 
    private String formatString = "%02d:%02d:%02d %s"; 

    public FooClock(int hours, int minutes, int seconds, boolean am) { 
     this.hours = hours; 
     this.minutes = minutes; 
     this.seconds = seconds; 
     this.am = am; 
    } 

    public void incrementSeconds() { 
     seconds++; 
     normalize(); 
    } 

    public void incrementMinutes() { 
     minutes++; 
     normalize(); 
    } 

    public void incrementHours() { 
     hours++; 
    } 

    public void normalize() { 
     if (seconds >= SECONDS_PER_MINUTE) { 
     minutes += seconds/SECONDS_PER_MINUTE; 
     seconds %= SECONDS_PER_MINUTE; 
     } 
     if (minutes >= MINUTES_PER_HOUR) { 
     hours += minutes/MINUTES_PER_HOUR; 
     minutes %= MINUTES_PER_HOUR; 
     } 
     if (hours >= 2 * NOON) { 
     hours %= (2 * NOON); 
     am = true; 
     } 
     if (hours >= NOON) { 
     am = false; 
     } 
    } 

    @Override 
    public String toString() { 
     String amString = am ? "AM" : "PM"; 
     return String.format(formatString, hours, minutes, seconds, amString); 
    } 

    public static void main(String[] args) { 
     int total_seconds = 24 * SECONDS_PER_MINUTE * MINUTES_PER_HOUR; 

     FooClock fooClock = new FooClock(0, 0, 0, true); 
     System.out.println(fooClock); 
     for (int i = 0; i < total_seconds; i++) { 
     fooClock.incrementSeconds(); 
     System.out.println(fooClock + " "); 
     } 
    } 
} 

Answer 2

我所做的是改變，而環成一個for循環使用幾乎一模一樣的代碼。我還添加了像「AM」和「PM」出頭

public static int hours; 

public static int minutes; 

public static int seconds; 

public static int [] TimeCounter = {hours, minutes, seconds}; 

public static void run(int h, int m, int s){ 
    hours = h; 
    minutes = m; 
    seconds = s; 
    TimeCounter[0] = hours; 
    TimeCounter[1] = minutes; 
    TimeCounter[2] = seconds; 
    String timeOfDay = "am"; 

    for (hours = 0; hours < 25; hours++){ 
     TimeCounter[0] = hours; 
     if (hours == 12){ 
      timeOfDay = "pm"; 
     } 
     System.out.println(TimeCounter[0] + " : " + TimeCounter[1] + " : " + TimeCounter[2] + " " + timeOfDay); 
     if (hours == 24){ 
      reset(TimeCounter); 
      break; 
     }else{ 
      for (int minutes = 0; minutes < 61; minutes++){ 
       TimeCounter[1] = minutes; 
       System.out.println(TimeCounter[0] + " : " + TimeCounter[1] + " : " + TimeCounter[2] + " " + timeOfDay); 
       } 
       if (minutes == 60){ 
        minutes = 0; 
        break; 
       }else{ 
        for (seconds = 0; seconds < 61; seconds++){ 
         TimeCounter[2] = seconds; 
         System.out.println(TimeCounter[0] + " : " + TimeCounter[1] + " : " + TimeCounter[2] + " " + timeOfDay); 
         if (seconds == 60){ 
          seconds = 0; 
          break; 
         } 
        } 
       } 
      } 
     } 

} 

//End of day 
public static void reset(int [] midNight){ 
    TimeCounter[0] = 0; 
    TimeCounter[1] = 0; 
    TimeCounter[2] = 0; 
} 

public static void main(String[] args){ 
    run(0, 0, 1); 
} 

}