AlphabetRange

import java.util.ArrayList;
import java.util.Iterator;
 
public class AlphabetRange {
 
	private ArrayList<Character> range;
 
	private char start;
	private char stop;
 
	public AlphabetRange(char start, char stop) {
 
		this.start = start;
		this.stop = stop;
 
		this.range = new ArrayList<Character>();
 
		build();
 
	}
 
	private void build() {
 
		boolean reverse = false;
 
		if (stop < start) {
			reverse = true;
		}
 
		for (int i = start; reverse ? i >= stop : i <= stop; i = reverse ? i - 1
				: i + 1) {
 
			range.add((char) i);
 
		}
 
	}
 
	public char get(int index) {
 
		return range.get(index);
 
	}
 
	public Iterator<Character> iterator() {
 
		return range.iterator();
 
	}
 
	public int size() {
 
		return range.size();
 
	}
 
	public String toString() {
 
		return range.toString();
 
	}
 
}