public Integer substitute(int i) {
		if (getPosition() > i) {
			i = i - getPosition() + 25;
		}
		else {
			i = i - getPosition();
		}
		int newVal = mapping[i] + getPosition();
		if (newVal > 25) {
			newVal = newVal -25;
			return newVal;
		} else {
			return newVal;
		}
	//	return mapping[i];
	}

	public Integer substituteBack(int iL) {
		for (int i = 0; i < 26; i++) {
			int tempOne = mapping[i];
			inverseMapping[tempOne] = i;
			}
		if (getPosition() > iL){
			iL = iL - getPosition() + 25;
		}
		else {
			iL = iL - getPosition();
		}

		int newVal = inverseMapping[iL] + getPosition();
		if (newVal > 25) {
			newVal = newVal -25;
			return newVal;
		} else {
			return newVal;
		}
		//return inverseMapping[iL];
	}