第二次作业 #80

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DXBlackSmith wants to merge 1 commit into parallel101:main from DXBlackSmith:main

DXBlackSmith commented Dec 6, 2024

学习了别人的代码，学到了迭代器的写法

新增了 reference.cpp 和 ans.cpp ，前者是我学习迭代器写的笔记，后者把迭代器应用在作业当中

会造成循环引用的问题，导致开辟的两块内存得不到释放
可以用初始化列表减少一次构造，同时可以声明为 explicit 使得其必须被显式构造
应该输出14次，但是因为有内存没有得到释放的问题
深拷贝的实现在 ans.cpp ，用了学习到的迭代器
我的理解是在主函数中只用到了拷贝构造，所以这里没报错
这里能用常量引用的方式，减少无谓的拷贝次数


          我再次完成作业了

dfe797b

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