import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class PerformanceAnalysisExample {
public static void main(String[] args) {
List<Integer> numbers = new ArrayList<>();
for (int i = 0; i < 1000000; i++) {
numbers.add(i);
}
Collections.shuffle(numbers);
long startTime = System.currentTimeMillis();
Collections.sort(numbers);
long endTime = System.currentTimeMillis();
long duration = endTime - startTime;
}
}
