public static void main(String[] args) {
//第一种
int a = 1;
int f = 0;
while (a < 10) {
for (int d = 1; d <= a; d++) {
f = a * d;
System.out.print(a + "*" + d + "=" + f + " ");
}
System.out.println();
a++;
}
//第二种
for (int i = 1; i < 10; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(i + "*" + j + "=" + (i * j) + " ");
}
System.out.println();
}
}