33 lines
991 B
Java
33 lines
991 B
Java
import java.util.List;
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import java.util.ArrayList;
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import java.util.Collections;
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class Test03 {
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/**
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* 产生[min, max)范围的随机整数
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*/
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public static int randomInt(int min, int max) {
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return (int) (Math.random() * (max - min) + min);
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}
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public static void main(String[] args) {
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List<Integer> redBalls = new ArrayList<>();
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for (int i = 1; i <= 33; ++i) {
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redBalls.add(i);
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}
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List<Integer> selectedBalls = new ArrayList<>();
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for (int i = 0; i < 6; ++i) {
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selectedBalls.add(redBalls.remove(randomInt(0, redBalls.size())));
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}
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Collections.sort(selectedBalls);
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selectedBalls.add(randomInt(1, 17));
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for (int i = 0; i < selectedBalls.size(); ++i) {
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System.out.printf("%02d ", selectedBalls.get(i));
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if (i == selectedBalls.size() - 2) {
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System.out.print("| ");
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}
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}
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System.out.println();
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}
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} |