如何在 Java 中打乱数组顺序?
java 8object oriented programmingprogramming
声明一个字符串数组，并以字母减号的形式添加元素
String[] letters = { "P","Q","R","S","T","U","V","W","X","Y","Z"};
将上述数组转换为列表减号
List<String>list = Arrays.asList(letters);
现在，使用 Random 类对象创建一个打乱顺序的数组，并使用 nextInt() 生成随机字母 −
int len = list.size();
System.out.println("Shuffled array...");
for (int i = 0; i < letters.length; i++) {
int index = new Random().nextInt(len);
String shuffle = list.get(index);
System.out.println(shuffle);
}
示例
import java.util.Arrays;
import java.util.List;
import java.util.Random;
public class Demo {
public static void main(String[] args) {
String[] letters = { "P", "Q", "R", "S", "T", "U","V", "W", "X", "Y", "Z" };
System.out.println("Initial array = "+Arrays.toString(letters));
List<String>list = Arrays.asList(letters);
int len = list.size();
System.out.println("Shuffled array...");
for (int i = 0; i < letters.length; i++) {
int index = new Random().nextInt(len);
String shuffle = list.get(index);
System.out.println(shuffle);
}
}
}
输出
Initial array = [P, Q, R, S, T, U, V, W, X, Y, Z] Shuffled array... P X S X W S V R Y Q R
