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教育部為提昇全民資安素養與電腦防護能力，本部於101年9月5日至11月5日舉辦「全民資安素養自我評量」活動，請在活動期間內踴躍上網檢測資訊安全素養認知程度，並有機會參與抽獎，詳情請參閱活動網站（網址： https://isafe.moe.edu.tw/event
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url="https://www.twse.com.tw/exchangeReport/STOCK_DAY?response=json&date=20220330&stockNo=2330"
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先說明一下這是後知後覺的解答，所謂後知就是股票價格已知存在陣列(清單)，當然就要用迴圈練習，雙迴圈暴力解需時O(n**2)，當然不用，採python單一迴圈解答「最佳股票的買賣時機#LeetCode 121 Best Time to Buy and Sell Stock」，解...
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你會用C的算子sizeof?
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XOR prefixsum CPP python解Leetcode 1829 Maximum XOR for Each Query 其實這裡考慮的是元素個數為2^maximumBit的交換群，運算子為XOR。 [Python code請進]
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Python C++使用字串find迴圈速解Leetcode 2490 Circular Sentence C++ & Python都有字串的find，用法都類似 split=s.find(' ', split+1)能找到s從index=split+1開...
14 則留言:
#include<iostream>
#include<cstdlib>
#include<cstring>
using namespace std;
#define row 4
#define col 3
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
term[i][j] = a[i][j];
}
}
double&operator()(int i, int j) {
return term[i][j];
}
void print() {
cout << "--------------------\n";
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
friend Matrix& operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
C.term[i][j] = A(i, j) + B(i, j);
}
return C;
}
friend Matrix& operator*(double r, Matrix A) {
Matrix M;
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
M.term[i][j] = r*A(i, j);
}
return M;
}
};
int main()
{
double a[4][3] = { {1,2,3},{4,5,6},{7,8,9},{10,11,12}};
double b[4][3] = { {0,2,3},{0,1,1},{0,1,2},{2,3,5}};
Matrix A(a), B(b);
A.print();
B.print();
Matrix C = A + B;
C.print();
Matrix M = 2.0*A;
M.print();
system("Pause");
return 0;
}
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
term[i][j] = a[i][j];
}
}
double& operator()(int i, int j) {
return term[i][j];
}
void print() {
cout << "----------------\n";
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
friend Matrix& operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = A(i, j) + B(i, j);
}
return C;
}
friend Matrix& operator*(double r, Matrix A) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = r*A(i, j) ;
}
return C;
}
};
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++) {
term[i][j] = a[i][j];
}
}
}
double& operator()(int i, int j) {
return term[i][j];
}
void print() {
cout << "====================\n";
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
friend Matrix&operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
C(i, j) = A(i, j) + B(i, j);
}
return C;
}
friend Matrix&operator*(double r, Matrix A) {
Matrix C;
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
C.term[i][j] = r*A(i,j);
}
return C;
}
};
int main()
{
double a[3][3] = { { 1,2,3 },{ 4,5,6 },{ 7,8,9 } };
double b[3][3] = { { 4,5,6 },{ 7,8,9 },{ 1,2,3 } };
Matrix A(a), B(b);
A.print();
B.print();
Matrix C = A + B;
C.print();
C = 3.0*A;
C.print();
system("Pause");
return 0;
}
#include
#include
#include
using namespace std;
#define row 3
#define col 3
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0;i < row; i++) {
for (int j = 0;j < col; j++)
term[i][j] = a[i][j];
}
}
double& operator()(int i, int j) {
return term[i][j];
}
void print() {
for (int i = 0;i < row;i++) {
for (int j = 0;j < col; j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
};
Matrix&operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0;i < row; i++) {
for (int j = 0;j < col; j++)
C.term[i][j] = A(i, j)*2 + B(i, j)*2;
}
return C;
}
int main() {
double a[3][3] = { {1,2,3},{4,5,6},{7,8,9} };
double b[3][3] = { {4,5,6 }, { 7,8,9 }, { 1,2,3 }};
Matrix A(a), B(b);
A.print();
B.print();
Matrix C = A + B;
C.print();
system("Pause");
return 0;
};
#include
#include
#include
using namespace std;
#define row 3
#define col 3
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0;i < row; i++) {
for (int j = 0;j < col; j++)
term[i][j] = a[i][j];
}
}
double& operator()(int i, int j) {
return term[i][j];
}
void print() {
for (int i = 0;i < row;i++) {
for (int j = 0;j < col; j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
};
Matrix&operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0;i < row; i++) {
for (int j = 0;j < col; j++)
C.term[i][j] = A(i, j)*2 + B(i, j)*2;
}
return C;
}
int main() {
double a[3][3] = { {1,2,3},{4,5,6},{7,8,9} };
double b[3][3] = { {4,5,6 }, { 7,8,9 }, { 1,2,3 }};
Matrix A(a), B(b);
A.print();
B.print();
Matrix C = A + B;
C.print();
system("Pause");
return 0;
};
#include
#include
#include
using namespace std;
#define row 3
#define col 3
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0;i < row; i++) {
for (int j = 0;j < col; j++)
term[i][j] = a[i][j];
}
}
double& operator()(int i, int j) {
return term[i][j];
}
void print() {
for (int i = 0;i < row;i++) {
for (int j = 0;j < col; j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
};
Matrix&operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0;i < row; i++) {
for (int j = 0;j < col; j++)
C.term[i][j] = A(i, j)*2 + B(i, j)*2;
}
return C;
}
int main() {
double a[3][3] = { {1,2,3},{4,5,6},{7,8,9} };
double b[3][3] = { {4,5,6 }, { 7,8,9 }, { 1,2,3 }};
Matrix A(a), B(b);
A.print();
B.print();
Matrix C = A + B;
C.print();
system("Pause");
return 0;
};
#include <iostream>
#include <cstdlib>
#include <cstring>
using namespace std;
#define row 3
#define col 3
class Matrix
{
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
term[i][j] = a[i][j];
}
}
double& operator()(int i, int j) {
return term[i][j];
}
void print() {
cout << "=================\n";
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
{
cout << term[i][j] << "\t";
}
cout << endl;
}
}
void R(int q) {
cout << "=================\n";
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
{
cout << term[i][j] * q << "\t";
}
cout << endl;
}
}
friend Matrix&operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
C.term[i][j] = A(i, j) + B(i, j);
}
return C;
}
friend Matrix&operator*(Matrix A, Matrix B)
{
Matrix C;
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++) {
C(i, j) = 0;
for (int k = 0;k < 3;k++)
C(i, j) += A(i, k)*B(k, j);
}
}
return C;
}
};
int main() {
double a[3][3] = { {1,2,3},{4,5,6},{7,8,9 }
};
double b[3][3] = { {4,5,6 }, { 7,8,9 }, { 1,2,3 }
};
Matrix A(a), B(b);
A.print();
B.print();
Matrix C = A + B;
C.print();
A.R(2);
C = A*B;
C.print();
system("Pause");
return 0;
}
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
term[i][j] = a[i][j];
}
}
double& operator()(int i, int j) {
return term[i][j];
}
void print() {
cout << "----------------\n";
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
friend Matrix& operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = A(i, j) + B(i, j);
}
return C;
}
friend Matrix& operator*(double r, Matrix A) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = r*A(i, j) ;
}
return C;
}
};
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
term[i][j] = a[i][j];
}
}
double& operator()(int i, int j) {
return term[i][j];
}
void print() {
cout << "----------------\n";
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
friend Matrix& operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = A(i, j) + B(i, j);
}
return C;
}
friend Matrix& operator*(double r, Matrix A) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = r*A(i, j) ;
}
return C;
}
};
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
term[i][j] = a[i][j];
}
}
double& operator()(int i, int j) {
return term[i][j];
}
void print() {
cout << "----------------\n";
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
friend Matrix& operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = A(i, j) + B(i, j);
}
return C;
}
friend Matrix& operator*(double r, Matrix A) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = r*A(i, j) ;
}
return C;
}
};
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
term[i][j] = a[i][j];
}
}
double& operator()(int i, int j) {
return term[i][j];
}
void print() {
cout << "----------------\n";
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
friend Matrix& operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = A(i, j) + B(i, j);
}
return C;
}
friend Matrix& operator*(double r, Matrix A) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = r*A(i, j) ;
}
return C;
}
};
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
term[i][j] = a[i][j];
}
}
double& operator()(int i, int j) {
return term[i][j];
}
void print() {
cout << "----------------\n";
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
friend Matrix& operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = A(i, j) + B(i, j);
}
return C;
}
friend Matrix& operator*(double r, Matrix A) {
Matrix C;
for (int i = 0; i < row; i++) {
for (int j = 0; j < col; j++)
C.term[i][j] = r*A(i, j) ;
}
return C;
}
};
#include
#include
using namespace std;
#define row 4
#define col 3
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
term[i][j] = a[i][j];
}
}
double&operator()(int i, int j) {
return term[i][j];
}
void print() {
cout << "--------------------\n";
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
friend Matrix& operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
C.term[i][j] = A(i, j) + B(i, j);
}
return C;
}
friend Matrix& operator*(double r, Matrix A) {
Matrix M;
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
M.term[i][j] = r*A(i, j);
}
return M;
}
};
int main()
{
double a[4][3] = { {1,2,3},{4,5,6},{7,8,9},{10,11,12}};
double b[4][3] = { {0,2,3},{0,1,1},{0,1,2},{2,3,5}};
Matrix A(a), B(b);
A.print();
B.print();
Matrix C = A + B;
C.print();
Matrix M = 2.0*A;
M.print();
system("Pause");
return 0;
}
#include
#include
#include
using namespace std;
#define row 4
#define col 3
class Matrix {
public:
double term[row][col];
Matrix() { memset(term, 0, sizeof(term)); }
Matrix(double a[row][col]) {
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
term[i][j] = a[i][j];
}
}
double&operator()(int i, int j) {
return term[i][j];
}
void print() {
cout << "--------------------\n";
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++) {
cout << term[i][j] << "\t";
}
cout << endl;
}
}
friend Matrix& operator+(Matrix A, Matrix B) {
Matrix C;
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
C.term[i][j] = A(i, j) + B(i, j);
}
return C;
}
friend Matrix& operator*(double r, Matrix A) {
Matrix M;
for (int i = 0;i < row;i++) {
for (int j = 0;j < col;j++)
M.term[i][j] = r*A(i, j);
}
return M;
}
};
int main()
{
double a[4][3] = { {1,2,3},{4,5,6},{7,8,9},{10,11,12}};
double b[4][3] = { {0,2,3},{0,1,1},{0,1,2},{2,3,5}};
Matrix A(a), B(b);
A.print();
B.print();
Matrix C = A + B;
C.print();
Matrix M = 2.0*A;
M.print();
system("Pause");
return 0;
}
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