import java.util.Collections;
import java.util.Vector;
public class Main {
public static void main(String[] args) {
Vector<String> v = new Vector<String>();
v.add("1");
v.add("2");
v.add("3");
v.add("4");
v.add("5");
System.out.println(v);
Collections.shuffle(v);
System.out.println(v);
}
}
/*[1, 2, 3, 4, 5]
[5, 4, 1, 3, 2]
*/
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