Java
public class MultiplicationTable {
public static void printLine(int i, int j) {
if (j > i) {
System.out.println();
return;
}
System.out.print(j + " * " + i + " = " + i * j + "\t");
printLine(i, j + 1);
}
public static void main(String[] args) {
for (int i = 1; i <= 9; i++) {
printLine(i, 1);
}
}
}
Kotlin
fun printLine(i: Int, j: Int) {
if (j > i) {
println()
return
}
print("$j * $i = ${i * j}\t")
printLine(i, j + 1)
}
fun main() {
for (i in 1..9) {
printLine(i, 1)
}
}
輸出結果：
1 * 1 = 1
1 * 2 = 2 2 * 2 = 4
1 * 3 = 3 2 * 3 = 6 3 * 3 = 9
1 * 4 = 4 2 * 4 = 8 3 * 4 = 12 4 * 4 = 16
1 * 5 = 5 2 * 5 = 10 3 * 5 = 15 4 * 5 = 20 5 * 5 = 25
1 * 6 = 6 2 * 6 = 12 3 * 6 = 18 4 * 6 = 24 5 * 6 = 30 6 * 6 = 36
1 * 7 = 7 2 * 7 = 14 3 * 7 = 21 4 * 7 = 28 5 * 7 = 35 6 * 7 = 42 7 * 7 = 49
1 * 8 = 8 2 * 8 = 16 3 * 8 = 24 4 * 8 = 32 5 * 8 = 40 6 * 8 = 48 7 * 8 = 56 8 * 8 = 64
1 * 9 = 9 2 * 9 = 18 3 * 9 = 27 4 * 9 = 36 5 * 9 = 45 6 * 9 = 54 7 * 9 = 63 8 * 9 = 72 9 * 9 = 81
