{
public static void getTime()
{
long start = System.currentTimeMillis();
runCode();
long end = System.currentTimeMillis();
System.out.println("鏈榪愯鎵鐢ㄦ椂闂存槸錛?+(end-start));
}
/*public static void runCode()
{
for(int i=0; i<10000; i++)
{
System.out.println(i);//9999 鏈榪愯鎵鐢ㄦ椂闂存槸錛?85
}
}*/
/*public static void runCode()
{
int b=0;
for(int i=0; i<10000; i++)
{
//[9999] 鏈榪愯鎵鐢ㄦ椂闂存槸錛?44
b = (int) Math.round(Math.random()*10);//鑰屼駭鐢?鍜?0涔嬮棿鐨勬暣鏁幫紝鍒欎細(xì)鍐欐垚錛?Math.round(Math.random()*10)
System.out.println("["+i+"]"+b);
}
}*/
public static void runCode()
{
int c=0;
for(int i=0; i<10000; i++)
{
c= java.util.concurrent.ThreadLocalRandom.current().nextInt(100);//鏈榪愯鎵鐢ㄦ椂闂存槸錛?43
System.out.println("["+i+"]"+c);
}
}
public static void main(String[] args)
{
RandomNumberDemo.getTime();
}
}
chenjianli 2012-04-20 23:09 鍙戣〃璇勮
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