import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
 // 5 to 1
 static void PrintNum(int n) // agr hum yha void ki jgh int use krte toh return ke sath koi integer bhinjata main fn me yha return ke sath kuchh nhi ja rha h
{ 
 if (n==0)
 { return;
} // humne condition isliye lagayi taki recursion infinity time run na ho
 // isse hum base case khte h
 
 System.out.println(n);  //ab yha aakr 5 print kr dega then 
                         // fir ab 4 print kr dega then 
 
 PrintNum(n-1);// then 4 ho jayega 
               // then 3 hoga eshe 0 hoga tb return ho jayega
 
}

static void PrintNum1(int n){
    if (n>5)
  {  return;
   }
   System.out.println(n);
    PrintNum1(n+1);
}
 
 
 
 
    public static void main(String[] args) {

     System.out.println("5 to 1 using recursion");
 
 
         int a = 5;
   // now we call the function 
      PrintNum(a);
      // we can also use int n there there is no connection between function and main function int
 
 System.out.println("now 1 to 5");
  int b = 1;
  PrintNum1(b);
  
  
  
  
    }
}