Java List±éÀú·½·¨ ¼°ÆäЧÂʶԱÈ
One:14109
Two:14000
Three:15141
four:14297
package com.zbalpha.test;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class ListTest {
public static void main(String args[]){
List<Long> lists = new ArrayList<Long>();
for(Long i=0l;i<1000000l;i++){
lists.add(i);
}
Long oneOk = oneMethod(lists);
Long twoOk = twoMethod(lists);
Long threeOk = threeMethod(lists);
Long fourOk = fourMethod(lists);
System.out.println("One:" + oneOk);
System.out.println("Two:" + twoOk);
System.out.println("Three:" + threeOk);
System.out.println("four:" + fourOk);
}
public static Long oneMethod(List<Long> lists){
Long timeStart = System.currentTimeMillis();
for(int i=0;i<lists.size();i++) {
System.out.println(lists.get(i));
}
Long timeStop = System.currentTimeMillis();
return timeStop -timeStart ;
}
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