摘要：
public class Homework { public static main (String[]rags){ int[] a = new int[10]; Random rand = new Random(); // 乱序 for (int i = 0; i < a.length; i++) 阅读全文
摘要：
public class Homework{ public static void main(String[]args){ for (int i = 1; i <= 9; i++) { for (int j = 1; j <= i; j++) { System.out.print(j + "*" + 阅读全文
摘要：
public class Homework17;{ public static void main (string[] args){ String str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; Rand 阅读全文