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+package com.nick.love.myra;%0A%0Aimport java.util.List;%0A%0Apublic class ICardGroupImpl implements ICardGroup %7B%0A%0A%09private List%3CICard%3E cards;%0A%0A    public ICardGroupImpl(List%3CICard%3E cards) %7B%0A%09%09this.cards = cards;%0A%09%7D%0A%09%0A%09@Override%0A%09public List%3CICard%3E sort() %7B%0A%09%09this.cards.sort((a, b) -%3E a.getNumber().compareToIgnoreCase(%0A%09%09%09%09b.getNumber()));%0A%09%09return this.getCards();%0A%09%7D%0A%0A%09@Override%0A%09public List%3CICard%3E getCards() %7B%0A%09%09return this.cards;%0A%09%7D%0A%7D%0A

Create ICardGroupImpl.java