day47：C++ day7，异常处理、using的第三种用法、类型转换、lambda表达式、STL标准模板库

my_vectoers.h:

#ifndef MY_VECTORS_H
#define MY_VECTORS_H
#include 

using namespace std;

template
class my_vectors
{
private:
    TYPE* ptr;
    int num;
    int cnum;
    TYPE* start_ptr=NULL;
    TYPE* end_ptr=NULL;
public:
    //无参构造
    my_vectors(){};

    //有参构造
    my_vectors(int num,const TYPE &val1);

    //拷贝构造
    my_vectors(const my_vectors &L);

    //拷贝构造2
    my_vectors(TYPE* start,TYPE* end);

    //=运算符重载
    bool operator=(const my_vectors &L);

    //>运算符重载
    bool operator>(const my_vectors &L);

    //[]运算符重载
    TYPE & operator[](int index);

    //assign函数1
    void assign(TYPE* start,TYPE* end);

    //assign函数2
    void assign( int num, const TYPE &val2 );

    //at函数
    TYPE at( int pos );

    //back函数
    TYPE back();

    //伪begin函数
    TYPE* begin();

    //capacity 函数
    int capacity();

    //clear 函数
    void clear();

    //empty 函数
    bool empty();

    //full 函数
    bool full();

    //伪end函数
    TYPE* end();

    //front函数
    TYPE front();

    //insert函数1
    TYPE* insert( int loc, const TYPE &val );

    //insert函数2
    void insert( int loc, int num, const TYPE &val );

    //insert函数3
    void insert( int loc, TYPE* start, TYPE* end );

    //max_size 函数
    int max_size();

    //pop_back函数
    void pop_back();

    //push_back 函数
    void push_back( const TYPE &val );

    //伪rbegin 函数
    TYPE* rbegin();

    //伪rend 函数
    TYPE* rend();

    //resize 函数
    void resize( int size, TYPE val );

    //size 函数
    int size();

    //swap 函数
    void swap( my_vectors &from );

    //三杯水
    void swap(TYPE &a,TYPE &b);
};


#endif // MY_VECTORS_H

my_vector.cpp:

#include "my_vectors.h"

//有参构造
template
my_vectors::my_vectors(int num,const TYPE &val1)
{
    this->num=num;
    cnum=num;
    ptr=new TYPE(num);
    for(int i=0;i
my_vectors::my_vectors(const my_vectors &L)
{
    this->num=L.num;
    cnum=num;
    ptr=new TYPE(L.num);
    memcpy(this,&L);
    start_ptr=ptr;
    end_ptr=ptr+num-1;
}

//拷贝构造2
template
my_vectors::my_vectors(TYPE* start,TYPE* end)
{
    num=(end-start)/sizeof(TYPE);
    cnum=num;
    ptr=new TYPE(num);
    memcpy(ptr,start,sizeof(TYPE)*num);
    start_ptr=ptr;
    end_ptr=ptr+num-1;
}

//=运算符重载
template
bool my_vectors::operator=(const my_vectors &L)
{
    if(num == L.num && memcmp(ptr,L.ptr,sizeof(num)) == 0)
    {
        return true;
    }
    return false;
}

//>运算符重载
template
bool my_vectors::operator>(const my_vectors &L)
{
    if(num > L.num)
    {
        return true;
    }else if(num == L.num && memcmp(ptr,L.ptr,sizeof(num)) > 0)
    {
        return true;
    }else{
        return false;
    }
}

//[]运算符重载
template
TYPE &my_vectors::operator[](int index)
{
    return *(ptr+index);
}

//assign函数1
template
void my_vectors::assign(TYPE* start,TYPE* end)
{
    delete []ptr;
    num=(end-start)/sizeof(TYPE);
    cnum=num;
    ptr=new TYPE(num);
    memcpy(ptr,start,sizeof(TYPE)*num);
    start_ptr=ptr;
    end_ptr=ptr+num-1;
}

//assign函数2
template
void my_vectors::assign( int num, const TYPE &val2 )
{
    delete []ptr;
    this->num=num;
    cnum=num;
    ptr=new TYPE(num);
    for(int i=0;i
TYPE my_vectors::at( int pos )
{
    return ptr[pos];
}

//back函数
template
TYPE my_vectors::back()
{
    return end_ptr;
}

//伪begin函数
template
TYPE* my_vectors::begin()
{
    return start_ptr;
}

//capacity 函数
template
int my_vectors::capacity()
{
    return cnum;
}

//clear 函数
template
void my_vectors::clear()
{
    while(!empty())
    {
        pop_back();
    }
}

//empty 函数
template
bool my_vectors::empty()
{
    return start_ptr==end_ptr==NULL;
}

//full 函数
template
bool my_vectors::full()
{
    return ((end_ptr-start_ptr)/sizeof(TYPE))==num;
}

//伪end函数
template
TYPE* my_vectors::end()
{
    return end_ptr;
}

//front函数
template
TYPE my_vectors::front()
{
    return &ptr[0];
}

//insert函数1
template
TYPE* my_vectors::insert( int loc, const TYPE &val )
{
    if(full())
    {
        cnum*=2;
        TYPE s[num];
        memcpy(s,this,sizeof(TYPE)*num);
        delete []ptr;
        ptr=new TYPE(cnum);
        memcpy(ptr,s,sizeof(TYPE)*num);
    }
    for(int i=ptr+num+1;i>=ptr+loc-1;i--)
    {
        *(ptr+i)=*(ptr+i-1);
    }
    *(ptr+loc-1)=val;
    num++;
    return ptr+loc-1;
}

//insert函数2
template
void my_vectors::insert( int loc, int num, const TYPE &val )
{
    if(full())
    {
        while(cnumnum+num)
        {
            cnum*=2;
        }
        TYPE s[num];
        memcpy(s,this,sizeof(TYPE)*num);
        delete []ptr;
        ptr=new TYPE(cnum);
        memcpy(ptr,s,sizeof(TYPE)*num);
    }
    for(int i=loc-1;i
void my_vectors::insert( int loc, TYPE* start, TYPE* end )
{
    int size=(end-start)/sizeof(TYPE);
    if(full())
    {
        while(cnumnum+size)
        {
            cnum*=2;
        }
        TYPE s[num];
        memcpy(s,this,sizeof(TYPE)*num);
        delete []ptr;
        ptr=new TYPE(cnum);
        memcpy(ptr,s,sizeof(TYPE)*num);
    }
    TYPE s1[num];
    memcpy(s1,ptr+loc-1,sizeof(TYPE)*(num-loc));
    memcpy(ptr+loc-1,start,sizeof(TYPE)*size);
    memcpy(ptr+loc-1+size,s1,sizeof(TYPE)*(num-loc));
    num++;
}

//max_size 函数
template
int my_vectors::max_size()
{
    return cnum;
}

//pop_back函数
template
void my_vectors::pop_back()
{
    *end_ptr=ptr[num-1];
    num--;
}

//push_back 函数
template
void my_vectors::push_back( const TYPE &val )
{
    if(full())
    {
        cnum*=2;
        TYPE s[num];
        memcpy(s,this,sizeof(TYPE)*num);
        delete []ptr;
        ptr=new TYPE(cnum);
        memcpy(ptr,s,sizeof(TYPE)*num);
    }
    *(ptr+num)=val;
}

//伪rbegin 函数
template
TYPE* my_vectors::rbegin()
{
    return end_ptr;
}

//伪rend 函数
template
TYPE* my_vectors::rend()
{
    return start_ptr;
}

//resize 函数
template
void my_vectors::resize( int size, TYPE val )
{
    delete[] ptr;
    ptr=new TYPE(size);
    num=size;
    cnum=size;
    for(int i=0;i
int my_vectors::size()
{
    return num;
}

//swap 函数
template
void my_vectors::swap( my_vectors &from )
{
    swap(this->ptr,from.ptr);
    swap(this->num,from.num);
    swap(this->cnum,from.cnum);
    swap(this->start_ptr,from.start_ptr);
    swap(this->end_ptr,from.end_ptr);
}

//三杯水
template
void my_vectors::swap(TYPE &a,TYPE &b)
{
    TYPE temp;
    temp=a;
    a=b;
    b=temp;
}

思维导图：有道云笔记