实验室阶段做练习，其中，变化bug称号：

#include 
     
      #include 
      
       int main(int, char**){	std::vector
       
        ** ppRandomData = distributeRandomInt(100);	for (unsigned int i=0; i<1000; i++)	{		if (ppRandomData[i])		{			std::cout << "Elements in [" << i << "] : ";			for (unsigned int k=0; k
        
         size(); k++)			{				std::cout << ppRandomData[i]->at(k) << " ";			}			std::cout << std::endl;		}	}	delete[] ppRandomData;	return 0;}std::vector
         
          ** distributeRandomInt(int vMod){	assert(vMod > 0);	std::vector
          
            **ppContainer; ppContainer = new std::vector
           
            *[vMod]; srand(0); for (int i=0; i<1000; i++) { int RandomNum = rand(); std::vector
            
              *pContainer = ppContainer[RandomNum%vMod]; if (pContainer = NULL) { pContainer = new std::vector
             
              ； } pContainer->push_back(RandomNum); } return ppContainer;}
             
            
           
          
         
        
       
      
     

这个题考了几个考点：

1 首先申请数组指针时一定要记得初始化数组中每个成员

2指针域指针之间的赋值与引用

3= 与==的差别

4内存泄露 ：释放指针 与释放指针的指针

5 这个migic number

改动例如以下：

#include 
     
           //add#include 
      
       #include 
       
        std::vector
        
         ** distributeRandomInt(int vMod);const int Total = 100;int main(int, char**){	std::vector
         
          ** ppRandomData = distributeRandomInt(100);	//for (unsigned int i=0; i<1000; i++)	for (unsigned int i=0; i<100; i++)//100 migic number	{		if (ppRandomData[i])		{			std::cout << "Elements in [" << i << "] : ";			for (unsigned int k=0; k
          
           size(); k++) { std::cout << ppRandomData[i]->at(k) << " "; } std::cout << std::endl; } } for (int i=0; i<100; ++i) { if (ppRandomData[i] != NULL) delete ppRandomData[i];//释放数组中每一块申请的内存 } delete[] ppRandomData; return 0;}std::vector
           
            ** distributeRandomInt(int vMod){ assert(vMod > 0); std::vector
            
              **ppContainer; ppContainer = new std::vector
             
              *[vMod]; for (int i=0; i
              

*pContainer = ppContainer[RandomNum%vMod]; std::vector

*& pContainer = ppContainer[RandomNum%vMod];//指针的引用，要改变指针的值 //if (pContainer = NULL) if (pContainer == NULL)// = 与==的差别 { //pContainer = new std::vector

； pContainer = new std::vector

; } pContainer->push_back(RandomNum); } return ppContainer;}

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