Template Classes 语法的例子： //mypair.h template<typename First, typename Second> class MyPair { public: First getFirst(); Second getSecond(); void setFirst(First f); void setSecond(Seco...

WHAT IS AN OBJECT？ An Object is an instance of a Class. When a class is defined, no memory is allocated but when it is instantiated (i.e. an object is created) memory is allocated. A class w...

All containers are collections of objects All containers implement iterators, but they’re not all the same! All iterators implement a few shared operations: Initializing -> iter =...

Streams stream: an abstraction for input/output. Streams convert between data and the string representation of data. std::coutis an output stream .It has type std::ostream Two ways to classify s...

Generic Methods 例子 public static <K,V> V get(Map61B<K,V> map, K key) { if map.containsKey(key) { return map.get(key); } return null; } 在type未知的情况下引用Comparable，下面的e...

Uniform initialization curly bracket initialization. Available for all types, immediate initialization on declaration! 可以使用等号，也可以不使用 以下是例子： std::vector vec{1,3,5}; std::pair numSuffix1{1,"st"}; St...

Caveats of autoboxing and unboxing Arrays are never autoboxes or auto-unboxed, e.g. if you have an array of integers int[] x, and try to put its address into a variable of type Integer[], ...

Constructors Are Not Inherited 构造函数是不会继承的，若是子类调用父类构造函数，需要先加上super()函数（不加会默认用无变量的super()) Abstract classes Interface All methods must be public. All variables must be public static final. ...

## 第一种思路 步骤 添加一个连接点(属于Position类) 对每个连接点生成一个符合条件的模块（房间(Room)或走廊(Hallway)） 在该模块上添加更多的连接点 重新建立一个目前未连接的出口的列表 重复步骤2、3、4 注意：遍历连接点的方式会影响世界的连通效果 ...

a最近学到了查找技术这里，在学完折半查找情况下，也顺便学了下二分查找树。当然未来也肯定会学习B树的。 这里便以一道上机题目（是本学期最后的实验题哦，嘿嘿，第一个作对！） 还是有点坑点的，一些问题我会在相关代码处注释。 Description 随着互联网技术的飞速发展，如何从海量数据中查找所需内容，不仅是科研人员关注的热点问题，许多IT公司也先后推出了各自的搜索引擎，如：Google、...