to peter

Sort.java

public class Sort{
	private int []letterArray;
	
	private void sortLetter(int length) {
		if (length == 1){
			return;
		}
		for (int i = 0;i < length-1;i++){
			letterArray[i] = letterArray[i] + letterArray[i+1];
			System.out.printf("%d ",letterArray[i]); 
		}
		System.out.printf("\n");
		this.sortLetter(length-1);
	}
	
	public static void main(String[] args) {
		Sort s = new Sort();
		s.letterArray = new int[]{2,1,3,1,1,1,1,1,1,1,5,3};
		s.sortLetter(s.letterArray.length);
	}
}