10.20
用C++完成数学中向量的封装,其中,用指针和动态申请支持向量长度的改变,使用浅克隆和深克隆复制向量类,比较这两种克隆方式的异同。
实验要求:
1.画出对应的类图;
2.提交源代码(用C++完成);
3.注意编程规范。
类图:
源代码:
1. 浅克隆:
#include <iostream>
using namespace std;usingnamespacestd;
//向量类
class Vector{classVector{
private:private:
int *p;int*p;
int len;intlen;
public:public:
Vector(int len);Vector(intlen);
Vector(const Vector &vector); //拷贝构造函数Vector(constVector &vector); //拷贝构造函数
~Vector();
int operator[](int i) const { return p[i]; }intoperator[](inti)const{returnp[i]; }
int &operator[](int i){ return p[i]; }int&operator[](inti){returnp[i]; } }
int length() const { return len; }intlength()const{returnlen; }
};
Vector::Vector(int len): len(len){Vector::Vector(intlen): len(len){
p = (int*)calloc( len, sizeof(int) );p = (int*)calloc( len,sizeof(int) );
}
//拷贝构造函数
Vector::Vector(const Vector &vector){Vector::Vector(constVector &vector){
this->len = vector.len;this->len = vector.len;
this->p = vector.p;this->p = vector.p;
}
Vector::~Vector(){ free(p); }Vector::~Vector(){free(p); }
//打印
void display(const Vector &vector){voiddisplay(constVector &vector){
int len = vector.length();intlen = vector.length();
for(int i=0; i<len; i++){for(inti=0; i<len; i++){
if(i == len-1){if(i == len-1){
cout<<vector[i]<<endl;
}else{}else{
cout<<vector[i]<<", ";cout<<vector[i]<<", ";
}
}
}
int main(){intmain(){
Vector v1(10);
for(int i=0; i<10; i++){for(inti=0; i<10; i++){
v1[i] = i;
}
Vector v2 = v1;
v2[6] = 55;
v2[2] = 20;
cout<<"浅克隆:"<<endl;cout<<"浅克隆:"<<endl;
cout<<"更改copyVector后vector的数据:"<<endl;cout<<"更改copyVector后vector的数据:"<<endl;
display(v1);
cout<<"更改copyVector后copyVector的数据:"<<endl;cout<<"更改copyVector后copyVector的数据:"<<endl;
display(v2);
return 0;return0;
}
2. 深克隆:
#include <iostream>
using namespace std;usingnamespacestd;
//向量类
class Vector{classVector{
private:private:
int *p;int*p;
int len;intlen;
public:public:
Vector(int len);Vector(intlen);
Vector(const Vector &vector); //拷贝构造函数Vector(constVector &vector); //拷贝构造函数
~Vector();
int operator[](int i) const { return p[i]; }intoperator[](inti)const{returnp[i]; }
int &operator[](int i){ return p[i]; }int&operator[](inti){returnp[i]; } }
int length() const { return len; }intlength()const{returnlen; }
};
Vector::Vector(int len): len(len){Vector::Vector(intlen): len(len){
p = (int*)calloc( len, sizeof(int) );p = (int*)calloc( len,sizeof(int) );
}
//拷贝构造函数
Vector::Vector(const Vector &vector){Vector::Vector(constVector &vector){
this->len = vector.len;this->len = vector.len;
this->p = (int*)calloc( this->len, sizeof(int) );this->p = (int*)calloc(this->len,sizeof(int) );
memcpy( this->p, vector.p, len * sizeof(int) );memcpy(this->p, vector.p, len *sizeof(int) );
}
Vector::~Vector(){ free(p); }Vector::~Vector(){free(p); }
//打印
void display(const Vector &vector){voiddisplay(constVector &vector){
int len = vector.length();intlen = vector.length();
for(int i=0; i<len; i++){for(inti=0; i<len; i++){
if(i == len-1){if(i == len-1){
cout<<vector[i]<<endl;
}else{}else{
cout<<vector[i]<<", ";cout<<vector[i]<<", ";
}
}
}
int main(){intmain(){
Vector v1(10);
for(int i=0; i<10; i++){for(inti=0; i<10; i++){
v1[i] = i;
}
Vector v2 = v1;
v2[6] = 55;
v2[2] = 20;
cout<<"深克隆:"<<endl;cout<<"深克隆:"<<endl;
cout<<"更改copyVector后vector的数据:"<<endl;cout<<"更改copyVector后vector的数据:"<<endl;
display(v1);
cout<<"更改copyVector后copyVector的数据:"<<endl;cout<<"更改copyVector后copyVector的数据:"<<endl;
display(v2);
return 0;return0;
}