Topic: 多线程下怎么计算程序段的运行时间??? |
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1.多线程下怎么计算程序段的运行时间??? | Copy to clipboard |
Posted by: zhangminamen Posted on: 2005-11-16 19:22 //怎么分别计算出插入排序和冒泡排序所以用的时间 import java.lang.System; class ThreadTime { static InsertTime it; static BubbleTime bt; public static void main(String args[]) { int num[]={1,2,5,6,8,7,4,9,3,10}; it=new InsertTime(num); //it.InsertTime(num); bt=new BubbleTime(num); //bt.BubbleTime(num); it.start(); bt.start(); } } class InsertTime extends Thread { //private ThreadTime tht; //static Timer t=new Timer(); //long t1; //long t0; int[] num=new int[10]; InsertTime(int num[]) { this.num=num; } long t0=System.currentTimeMillis(); void insertSort()//插入排序 { //t.startTimer(); int temp; for(int i=1;i<10;i++) { for(int j=i;j>=0;j--) { if(num[j]>num[j-1]) { temp=num[j]; num[j]=num[j-1]; num[j-1]=num[j]; } } } //t1=System.currentTimeMillis(); /*try { sleep(1000); } catch(InterruptedException e) { System.out.println(e.getMessage()); } System.out.println(t1-t0);*/ } public void run() { //insertSort(int num[]); for(int k=0;k<10;k++) { System.out.print(" "+num[k]); try { sleep(1000); } catch(InterruptedException e) { System.out.println(e.getMessage()); } } System.out.println(); System.out.println(t1-t0); } } class BubbleTime extends Thread { //private ThreadTime tht; private int temp; //static Timer t=new Timer(); int[] num=new int[10]; BubbleTime(int num[]) { this.num=num; } void bubbleSort()//冒泡排序 { //t.startTimer(); for(int i=0;i<10;i++) for(int j=0;j<9;j++) { if(num[j]<num[j+1])//按从大到小排序 { temp=num[j]; num[j]=num[j+1]; num[j+1]=temp; } } //System.out.println(t.elapsedTimer()); } public void run() { //bubbleSort(int num[]); for(int k=0;k<10;k++) { System.out.print(" "+num[k]); try { sleep(1000); } catch(InterruptedException e) { System.out.println(e.getMessage()); } } System.out.println(); } } |
2.Re:多线程下怎么计算程序段的运行时间??? [Re: zhangminamen] | Copy to clipboard |
Posted by: zhangminamen Posted on: 2005-11-17 08:34 为什么没有人回答我的问题??? |
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