class forDemo {
public static void main(String[] args) {
// 正的九九乘法表
for(int x=1; x<=9; x++) {
for(int y=1; y<=x; y++) {
System.out.print(y+\"*\"+x+\"=\"+x*y+\"\\"); }
System.out.println(); }
System.out.println(\"\\nover\\n\");
// 倒的九九乘法表
for(int x=1; x<=9; x++) {
for(int y=x; y<=9; y++) {
System.out.print(x+\"*\"+y+\"=\"+x*y+\"\\"); }
System.out.println(); }
System.out.println(\"\\nover\\n\"); } }