Scala编写的打印乘法口诀和金字塔

public class Calculate {
public static void test1(){
for(int i=1;i<10;i++){
for(int j=1;j<=i;j++){
System.out.print(j+"*"+i+"="+i*j+" ");
}
System.out.println();
}
}
public static void test2(){
int i=1;
while(i<10){
int j=1;
while(j<=i){
System.out.print(j+"*"+i+"="+i*j+" ");
j++;
}
System.out.println();
i++;
}
}
public static void main(String[] args) {
test1();
test2();
}
}

public class Pyramid {
public static void open(int k){
for(int i=1;i<=k;i++){
for(int j=1;j<=k-i;j++){
System.out.print(" ");
}
for(int j=1;j<=i;j++){
System.out.print("* ");
}
System.out.println();
}
}

public static void main(String[] args) {
open(9);
}

}