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corejava/corejava第10版/v1ch09/shuffle/ShuffleTest.java
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2019-05-22 19:31:49 +08:00

23 lines
550 B
Java

package shuffle;
import java.util.*;
/**
* This program demonstrates the random shuffle and sort algorithms.
* @version 1.11 2012-01-26
* @author Cay Horstmann
*/
public class ShuffleTest
{
public static void main(String[] args)
{
List<Integer> numbers = new ArrayList<>();
for (int i = 1; i <= 49; i++)
numbers.add(i);
Collections.shuffle(numbers);
List<Integer> winningCombination = numbers.subList(0, 6);
Collections.sort(winningCombination);
System.out.println(winningCombination);
}
}