CodeChallenge.java

package ch.salt.code.challenge;



import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;



public class CodeChallenge
{
    
    
    public static String treatString(final String str) {
    
    
        final int length = str.length();
        final List<Character> charList = new ArrayList<Character>(str.length());
        for (int zIndex = -1; zIndex < length - 1; ++zIndex) {
            charList.add(str.charAt(zIndex + 1));
        }
        final List<Character> charList2 = new LinkedList<Character>();
        int z2Index = -2;
        final int value = 8;
        final int res = value % 3;
        while (z2Index < length - 2) {
            charList2.add(charList2.size(), charList.get(z2Index + res));
            z2Index++;
        }
        final char[] array = new char[length];
        for (int i = 0; i < length; ++i) {
            array[length - i - 1] = charList2.get(i);
        }
        return new String(array);
        
    }
}