1095 Maximum Swap Algorithms Medium
Description Given a non-negative integer. You could choose to swap two digits of it. Return the maximum valued number you could get.
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在谈这个话题之前呢,还是得了解一下内存布局,以x86的32位系统为例: 然后得明确一点,NULL指针是无法访问的,如果强行访问,则会引发异常 然而空对象指针有时候却能够调用成员函数
class C
{
public:int a;st…