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Copy pathArrayList3.java
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41 lines (34 loc) · 1.16 KB
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import java.util.*;
import java.io.*;
public class ArrayList3 {
public static void main(String args[]) {
long l1 = System.currentTimeMillis();
ArrayList<String> al1 = new ArrayList<String>();
al1.add("first");
al1.add("second");
al1.add("third");
al1.add("fourth");
al1.add("first");
System.out.println("al1 : " + al1);
for(int i = 1; i < 100000; i++) {
for (int j = 1; j < 100000; j++) {
int k = 4;
}
}
ArrayList<String> al2 = new ArrayList<String>();
al2.add("1st");
al2.add("2nd");
al2.add("3rd");
System.out.println("al2 : " + al2);
al1.addAll(al2);
System.out.println("After adding al2 on al1 : " + al1);
al1.addAll(1, al2);
System.out.println("adding al2 at index 1 in al1 : " + al1);
al1.removeAll(al2);
System.out.println("removeAll : " + al1);
al1.removeIf(str -> str.contains("first"));
System.out.println("after conditional remove : " + al1);
long l2 = System.currentTimeMillis();
System.out.println((l2 - l1) / 1000);
}
}