Lintcode208 Assignment Operator Overloading (C++ Only) solution 題解
【題目描述】
Implement an assignment operator overloading method.
Make sure that:
The new data can be copied correctly
The old data can be deleted / free correctly.
We can assign like A = B = C
實現賦值運算子過載函式,確保:
新的資料可準確地被複制
舊的資料可準確地刪除/釋放
可進行A = B = C賦值
【題目連結】
www.lintcode.com/en/problem/assignment-operator-overloading-c-only/
【題目解析】
這題就是考c++中的overload。題目要求先delete A,再copy B中的data。那麼首先檢查A的data是不是已經等於B了,如果是,直接return;如果不是,先delete A的data,然後new一個新的char*,把B的data copy到A中去。
【參考答案】
www.jiuzhang.com/solutions/assignment-operator-overloading-c-only/
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