Recursive Function - Getting back to Java - Am I too old for Logic?? 1

[eb24]

It's been since the mid 90's since I've worked with Java and would like to get back into it. My work revolves around 90% .NET and SQL Server (Windows). I am using an old manual to practice and just can't seem to figure it out.

Trying this signature: public static String myChar(char z)

Here is the problem:
1) If z = 'A', "A" is returned
2) For other values of z, the return value consists of
3 parts:
- the return value for the previous letter (z - 1),
- followed by the letter z itself, and
- followed by a 2nd copy of the return value for the previous letter.

EX: myChar('C') ==> "ABACABA".

Any assistance will be greatly appreciated.

 

[Diancecht]

Could you provide a code snippet or be a little more concrete with your question?

Cheers,
Dian

 

[snuv]

It has no error checking or anything but ...

class test
{  
	public static void main(String args[])
	{
		System.out.println(myChar('D'));
	}

	public static String myChar(char z)
	{
		String strRetVal = "A";
		if (z != 'A')
		{
			char x = z;
			x--;
			String strTemp = myChar(x);
			strRetVal = strTemp + z + strTemp;
		}
		return strRetVal;
	}
}

"If it could have gone wrong earlier and it didn't, it ultimately would have been beneficial for it to have." : Murphy's Ultimate Corollary