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javaloopsfor-looprecursionalphabet

How to print a through z using a recursive method

Hi new to java here and I need to print the alphabet from a to z and in reverse from z to a. I need to do this using a recursive method.

class Alphabets{


public static void main(String args[]){
  char ch;
  for( ch = 'a' ; ch <= 'z' ; ch++ )
    System.out.print(ch);
  System.out.println();
  for( ch = 'z' ; ch >= 'a' ; ch--)
     System.out.print(ch);

  if (ch <= 'a') ch = ch--;
    else if(ch >='a') ch = ch++;
    System.out.print(ch);

 }
}

My output for the two for loops seems to work just fine but I am completely lost on the recursive method.

Solution 
  • public static void printCharRecur(char ch) {
 if(ch=='z') System.out.print("z z");
 else {
  System.out.print(ch);
  printCharRecur((char) (ch+1));
  System.out.print(ch);
 }
}

    Call printCharRecur('a') from main