题目描述：输入5个任务的ID，任务优先级，开始运行时间和任务运行时间，其中调度过程支持抢占，即优先级值高的任务可抢占正在运行的优先级值低的任务，最后输出前200秒，任务的调度过程
输入描述：任务信息输入格式为：[任务ID.任务优秀级.任务开始运行时间.任务运行时长]；任务与任务之间使用“|”隔离；5个任务的任务ID为1-5；任务优先级范围为0-200.
输入例子：[1.80.1.10]|[2.20.11.15]|[3.50.21.10]|[4.120.31.10]|[5.100.41.10]
输出例子：0.1|1.10|2.10|3.10|4.10|5.10|2.5|0.144
代码如下：
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class add3 {
public static void main(String[] args) {
String line = new Scanner(System.in).nextLine();
String[] strTasks = line.split("\\|");
List<Task> lst = new ArrayList<Task>();
for(int i = 0; i < strTasks.length; i++) {
String[] cs = strTasks[i].substring(1, strTasks[i].length() - 1).split("\\.");
int id = Integer.parseInt(cs[0]);
int p = Integer.parseInt(cs[1]);
int start = Integer.parseInt(cs[2]);
int allTime = Integer.parseInt(cs[3]);
lst.add(new Task(id, p, start, allTime));
}
List<Integer> queue = new ArrayList<Integer>();
for(int i = 0; i < 200; i++) {
Task currentTask = null;
for(Task task : lst) {
if(task.start <= i && task.left > 0) {
if(currentTask == null || task.p > currentTask.p)
currentTask = task;
}
}
if(currentTask == null)
queue.add(0);
else {
queue.add(currentTask.id);
currentTask.left--;
}
}
//System.out.println(lst);
//System.out.println(queue);
int current = queue.get(0), cnt = 1;
List<Result> results = new ArrayList<Result>();
for(int i = 1; i < queue.size(); i++) {
if(queue.get(i) != current) {
results.add(new Result(current, cnt));
current = queue.get(i);
cnt = 1;
} else cnt++;
}
results.add(new Result(current, cnt));
boolean first = true;
for(Result r : results) {
if(first) {
System.out.print(r);
first = false;
} else {
System.out.print("|" + r);
}
}
System.out.println();
}
}
// [1.80.1.10]|[2.20.11.15]|[3.50.21.10]|[4.120.31.10]|[5.100.41.10]
class Task {
int id;
int allTime;
int left;
int start;
int p;
Task(int id, int p, int start, int allTime) {
this.id = id;
this.p = p;
this.start = start;
this.allTime = allTime;
this.left = allTime;
}
public String toString() {
return "[id=" + id + ", allTime=" + allTime + ", left=" + left + ", start=" + start + ", p=" + p + "]";
}
}
class Result {
int x, y;
Result(int x, int y) {
this.x = x;
this.y = y;
}
public String toString() {
return x + "." + y;
}
}