函数式编程练习：使用函数式重构代码 #56
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恭喜你，你的提交 d83c3ba 已经通过我们的CI检查：Your tests passed on CircleCI! 👍 它会被自动merge后revert。请不要骄傲，继续挑战！ |
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BiConsumer接口，消费两个数据，其数据类型由泛型参数决定。
void accept(T t, U u)，消费两个指定泛型的数据Supplier接口，"供给" , 对应的Lambda表达式需要“对外提供”一个符合泛型类型的对象数据。
T get()，用来获取一个泛型参数指定类型的对象数据。IntBinaryOperator接口，运算两个int值并产生一个int值结果
int applyAsInt(int left, int right)，将运算符应用于给定的参数