Lyric_Lu的博客

 图形：public class ArrayTest{ public static void main(String[] args){ char[][] a = new char[9][9]; for(int i=1,h=0;i<=9;i++,h++){ int k=0; for(int j=1;j<=5-i&&i<5 || i>...

public class ArrayAndRan{ public static void main(String[] args){ int a =0; int num[] = new int[30]; for(int i=0;i<num.length;i++){ num[i] = (int)(Math.random()*100); a += num[i]; ...

图：public class ArrayTest2{ public static void main(String[] args){ char[][] a = new char[6][]; for(int i =0;i<6;i++){ a[i] = new char[i+1]; for(int j=0;j<=i;j++){ a[i][j] = '*'...

 公式中A(n,m)为排列数公式，C(n,m)为组合数公式。import java.util.Scanner;public class Test{ static void inputArray(int[] k){ for(int i = 0;i<k.length;i++){ System.out.print("请输入第"+(i+1)+"个数："); k[i]...