import java.io.*;
import java.util.*;
public class ForLoop {
private String A=" ";
public boolean isPrime(int n) {
for (int j = 2; j < n; j = j + 1){
if (n % j == 0) {
return false;
}
}
return true;
}
public String reverse(String a) {
for (int b=a.length(); b>0; b=b-1){
System.out.print(a.substring(b-1, b));
}
return A;
}
public String table(int n, int m) {
int a = 1;
while (a <= n) {
System.out.print(" " + a);
a = a + 1;
}
System.out.println("");
int z = 1;
for (int i=1; i<m+1; i=i+1) {
System.out.print(i + " ");
while (z <= n) {
int c = i*z;
System.out.print(c);
z = z + 1;
System.out.print(" ");
}
System.out.println("");
z = 1;
}
return " ";
}
}