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void reverse (char *s , int i, int j)  {
       if(i<j){
                 swap(s[i],s[j]);
                reverse(s,i+1,j-1);
      }
}

- richa.shrma.iitd March 25, 2012 | Flag Reply

static std::string Reverse(std::string s)
{
	if (s.size() == 1) return s;
	
	return Reverse(s.substr(1)) + s[0];
}

- gimli March 26, 2012 | Flag Reply

I think it is asking to use the divide and conquer technique. {{{ public string Reverse(string value) { if (value.Length == 1) return value; string leftMostChar = value.SubString(0,1); string remainChars = value.SubString(1); return Reverse(remainChars) + leftMostChar; } - Anonymous March 28, 2012 | Flag Reply

I am making small assumption before writing this code . .

main()
{
          char c = getchar();
          if( c !='\n')
                main();
          putchar(c);
}

- Shivaprasad April 02, 2012 | Flag Reply

public class ReverseString {

	static String reverse = "";
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		String str = "abcd";
		System.out.println(str);
		str = reverseString(str, str.length());
		System.out.println(str);
	}

	private static String reverseString(String str, int len) {
		// TODO Auto-generated method stub
		
		if(str.length() == 1) return str;
		if(len == 0) return reverse;
		reverse = reverse + str.charAt(--len);
		return reverseString(str, len);
	}

}

- sunand March 14, 2013 | Flag Reply

void reverse(char* str)
{
  int len=strlen(str);
  int i=0,j=len-1;
  char temp;
  while(j>i){
    temp=str[i];
    str[i]=str[j];
    str[j]=temp;
    i++;
    j--;
  }
}

- feiskyer March 25, 2012 | Flag Reply