Thread: Need help with String Trimming.. and displaying Keys on maps.

orking on learning recursion - and i have finally solved the issue.

The last issue I need to figure out are two minor issues that I can't seem to find out the problems on. After 2 hours of testing and no success... i'm over here.. seeking help and assistance on some pointers.



I have a method testR that accepts a string = symbol.

The method will split the String, if it has a '|', or white space.

But if, for example, the string symbol of this is passed int:

" T | W J Y P "

The method below fails to eliminate the trailing and starting white spaces between the letters. Wondering where I should be running it.

	public String testR(String symbol){
			String s = storeString.get(symbol);
			String[] parts = s.split("[|]");
			Random rand = new Random();
			int pick = rand.nextInt(parts.length);		
			String x = parts[pick];
			String[] space = x.split("[ \t]");
 
			String rString = "";
 
			for( int i=0; i < space.length; i++){
				if(!grammarContains(space[i])){ 
					rString = rString.concat(space[i].trim()+" ");
				}else{			
					rString = rString.concat(testR(space[i].trim()));
				}
			}
			return rString;
	}

Then I have a method showKeys. Assume that I already have a map and keys/values stored.

I'm just simply trying to access the keys and display it out.

But i'm having no luck in that either.

 
	public String showKeys(){		 
		String s = "";
		for (String nonTerminal : storeString.keySet() ) {
      	s.concat(nonTerminal+", ");
    	}
	//	s = "["+s+"]";
		return s;
	}

Thanks.