3 编写程序,打印乘法口诀表;
public class Test4 {
public static void main (String[] args) {
System.out.print("/t");
for(int i=1; i<=9; ++i) {
System.out.print(i + "/t");
}
System.out.println();
for(int i=1; i<=9; ++i) {
System.out.print(i + "/t");
for(int j=1; j<=i; ++j) {
System.out.print(i*j + "/t");
}
System.out.println();
}
}
}