【id:342】【14分】F. 矩阵类模板(类模板)
时间限制
1s
内存限制
128MB
题目描述
设计一个矩阵类模板Matrix,支持任意数据类型的数据。
要求至少包含2个成员函数:矩阵转置函数transport、以及打印输出函数print
编写main函数进行测试,调用类的成员函数完成转置和输出。
输入
第一行先输入t,表示有t个测试用例
从第二行开始输入每个测试用例的数据。
首先输入数据类型,I表示int,D表示double,C表示char,接着输入两个参数m和n,分别表示矩阵的行和列
接下来输入矩阵的元素,一共m行,每行n个数据
输出
输出转置后的矩阵
样例查看模式
正常显示
查看格式
输入样例1 <-复制
2
I 2 3
1 2 3
4 5 6
C 3 3
a b c
d e f
g h i
输出样例1
1 4
2 5
3 6
a d g
b e h
c f i
class template
Add to class
template<class T>
The data members in the class are of type T
The incoming array parameters need to be entered outside first and cannot be entered in the constructor.
Definition in main function
Matrix<int> one(arr, row, column);
one is the object name
#include <iomanip>
#include <algorithm>
#include "iostream"
using namespace std;
template<class T>
class Matrix {
//要求至少包含2个成员函数:矩阵转置函数transport、以及打印输出函数print
public:
T **arr;
int row;
int column;
Matrix(T **arr, int row, int column) : arr(arr), row(row), column(column) {}
void transport() {
T **res = new T*[column];
for (int i = 0; i < column; ++i) {
res[i] = new T[row];
}
for (int i = 0; i < row; ++i) {
for (int j = 0; j < column; ++j) {
res[j][i] = arr[i][j];
}
}
arr = res;
}
void print() {
for (int i = 0; i < column; ++i) {
for (int j = 0; j < row - 1; ++j) {
cout << arr[i][j] << " ";
}
cout << arr[i][row - 1] << endl;
}
}
};
int main() {
int times;
cin >> times;
while (times--) {
char type;
int row;
int column;
cin >> type >> row >> column;
//I表示int,D表示double,C表示char
switch (type) {
case 'I': {
int **arr = new int *[row];
for (int i = 0; i < row; ++i) {
arr[i] = new int[column];
}
for (int i = 0; i < row; ++i) {
for (int j = 0; j < column; ++j) {
cin >> arr[i][j];
}
}
Matrix<int> one(arr, row, column);
one.transport();
one.print();
break;
}
case 'D': {
double **arr = new double *[row];
for (int i = 0; i < row; ++i) {
arr[i] = new double[column];
}
for (int i = 0; i < row; ++i) {
for (int j = 0; j < column; ++j) {
cin >> arr[i][j];
}
}
Matrix<double>one(arr, row, column); one.transport();
one.print();
break;
}
case 'C': {
char **arr = new char *[row];
for (int i = 0; i < row; ++i) {
arr[i] = new char[column];
}
for (int i = 0; i < row; ++i) {
for (int j = 0; j < column; ++j) {
cin >> arr[i][j];
}
}
Matrix<char>one(arr, row, column); one.transport();
one.print();
break;
}
}
}
}