我正在制作一个24小时时钟。我有下面的代码。我的问题是int[]
时间等于[0, 0, 0]
,并且每次迭代都会打印出来
更多可能对您有所帮助的信息。我将Array TimeCounter
作为[hours, minutes, seconds]
。重置方法将选定的int值设置为零、保持不变或增加一。嵌套的while循环用于遍历时钟。
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);
}
数组中的int与变量中的int不同。是的,您可以用变量初始化数组,但在那之后,数组int项就独立了。如果要增加数组中的int项,则必须直接执行:myArray[someIndex]++
。
顺便说一句,根据我的评论,你不允许在这个程序中使用面向对象的概念吗?说明书是否强制您对所有内容都使用静态?我之所以这么问,是因为一个更好的程序不会像你现在这样使用数组,而是会有秒、分钟和小时的int字段,并且会封装从秒到分钟到小时的滚动逻辑。这将使更易于维护和增强。
编辑
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 + " ");
}
}
}
我所做的是使用几乎完全相同的代码将while循环更改为for循环。我还添加了一些像"am"one_answers"pm"这样的
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);
}
}