@@ -0,0 +1,1061 @@
+package com.andela.currencycalculator.calculatorbrain;%0A%0Aimport android.content.Context;%0A%0Aimport com.andela.currencycalculator.model.currency.Currency;%0A%0Aimport java.util.ArrayList;%0Aimport java.util.Queue;%0A%0A/**%0A * Created by Spykins on 26/02/2016.%0A */%0Apublic class CalculatorManager %7B%0A%0A    private ArrayList%3CString%3E currencyInput;%0A    CurrencyConverter currencyConverter;%0A%0A    public CalculatorManager(ArrayList%3CCurrency%3E currencies)%7B%0A        currencyConverter = new CurrencyConverter();%0A        currencyConverter.setAllCurrencyInDb(currencies);%0A        currencyInput = new ArrayList%3C%3E();%0A    %7D%0A%0A    public String exchangeFromCurrencyTo(String convertFrom, String convertTo, String amount)%7B%0A        return currencyConverter.exchangeFromCurrencyTo(convertFrom,convertTo,amount);%0A    %7D%0A%0A    public boolean isOperator()%7B%0A        String lastInputValue = currencyInput.get(currencyInput.size()-1);%0A        boolean flag = lastInputValue == %22+%22 %7C%7C lastInputValue == %22-%22 %7C%7C lastInputValue == %22X%22%0A                %7C%7C lastInputValue == %22/%22;%0A        return flag;%0A    %7D%0A%0A%0A%0A%0A%7D%0A

Implement currency Calculator Manager