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10 Commits

Author SHA1 Message Date
Morph01
e360589bd9 add some stuff 2024-02-03 22:03:56 +01:00
5043b67df1 nombre rationnel (pour Julien) 2024-02-02 16:11:33 +01:00
3398e38b0b launch gdb in correct cwd 2024-02-02 16:10:56 +01:00
4b032ffaeb better jordan 2024-02-02 16:10:34 +01:00
6136a8f88b change null factor 2024-02-02 16:09:38 +01:00
6ea893f700 run in directory 2024-02-02 14:41:46 +01:00
e9321631c5 save and load 2024-02-02 14:41:31 +01:00
464c94ccf1 split main and matrix 2024-02-02 11:16:51 +01:00
deefbf9682 it works lol 2024-02-02 11:11:27 +01:00
7aaf457586 don't stop at entry 2024-02-02 11:11:12 +01:00
11 changed files with 335 additions and 162 deletions

3
.vscode/launch.json vendored
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@@ -9,8 +9,7 @@
"request": "launch",
"name": "Debug XMake target",
"target": "Pivot",
"cwd": "${workspaceFolder}",
"stopAtEntry": true
"cwd": "${workspaceFolder}/matricies",
}
]
}

3
matricies/matrice2x2.mat Normal file
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@@ -0,0 +1,3 @@
2 2
6 9
9 6

4
matricies/matrice3x3.mat Normal file
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@@ -0,0 +1,4 @@
3 3
1 2 3
4 5 6
1 2 3

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@@ -0,0 +1,4 @@
3 3
1 0 -1
0 1 2
0 0 0

5
matricies/matrice4x4.mat Normal file
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@@ -0,0 +1,5 @@
4 4
1 2 3 4
8 9 10 11
5 6 7 8
12 13 14 15

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@@ -0,0 +1,5 @@
4 4
1 0 0 -0.786594
0 1 0 8.94049
0 0 1 -2.0538
0 0 0 0

6
matricies/matrice5x5.mat Normal file
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@@ -0,0 +1,6 @@
5 5
1 2 3 4 5
16 17 18 19 20
6 7 8 9 10
11 12 13 14 15
21 22 23 24 25

256
src/Matrix.h Normal file
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@@ -0,0 +1,256 @@
#pragma once
#include <algorithm>
#include <cmath>
#include <fstream>
#include <iostream>
#include <vector>
template <typename T>
static bool EqualZero(T var) {
return std::abs(var) < std::pow(10, -5);
}
template <typename T>
class Matrix {
private:
std::size_t m_Lignes;
std::size_t m_Colonnes;
std::size_t m_Dimension;
std::vector<T> m_Data;
public:
Matrix(const std::string& fileNameInput) {
Load(fileNameInput);
}
Matrix(std::size_t lignes, std::size_t colonnes) : m_Lignes(lignes), m_Colonnes(colonnes), m_Dimension(lignes * colonnes) {
m_Data.resize(m_Dimension);
}
Matrix(std::size_t lignes, std::size_t colonnes, std::initializer_list<T>&& initList) :
m_Lignes(lignes), m_Colonnes(colonnes), m_Dimension(lignes * colonnes) {
m_Data = initList;
m_Data.resize(m_Dimension);
}
~Matrix() {}
Matrix operator*(const Matrix& other) const {
if (m_Colonnes != other.m_Lignes) {
std::cerr << "Mutiplication impossible car la dimensions des matrices est incompatible" << std::endl;
}
Matrix result(m_Lignes, other.m_Colonnes);
for (std::size_t i = 0; i < m_Lignes; ++i) {
for (std::size_t j = 0; j < other.m_Colonnes; ++j) {
T sum = 0;
for (std::size_t k = 0; k < m_Colonnes; k++) {
sum += at(i, k) * other.at(k, j);
}
result.at(i, j) = sum;
}
}
return result;
}
void Print() const {
for (size_t i = 0; i < m_Lignes; ++i) {
std::cout << "[ ";
for (size_t j = 0; j < m_Colonnes; ++j) {
std::size_t indice = i * m_Lignes + j;
std::cout << at(i, j) << " ";
}
std::cout << "]";
std::cout << std::endl;
}
}
void PrintDebug() {
#ifndef NDEBUG
Print();
std::cout << "\n";
#endif
}
void Insert() {
for (size_t i = 0; i < m_Lignes; ++i) {
for (size_t j = 0; j < m_Colonnes; ++j) {
std::cin >> at(i, j);
}
std::cout << std::endl;
}
}
void Save(const std::string& fileName) {
std::ofstream out{fileName};
if (!out) {
std::cerr << "Impossible de sauvegarder la matrice !\n";
return;
}
out << m_Lignes << " " << m_Colonnes << "\n";
for (std::size_t i = 0; i < m_Lignes; i++) {
for (std::size_t j = 0; j < m_Colonnes; j++) {
out << at(i, j) << " ";
}
out << "\n";
}
}
void Load(const std::string& filename) {
std::ifstream in{filename};
if (!in) {
std::cerr << "Impossible de charger la matrice !\n";
return;
}
in >> m_Lignes >> m_Colonnes;
m_Data.resize(m_Lignes * m_Colonnes);
for (std::size_t i = 0; i < m_Lignes; i++) {
for (std::size_t j = 0; j < m_Colonnes; j++) {
in >> at(i, j);
}
}
}
void Transpose() {
for (std::size_t i = 0; i < m_Lignes; i++) {
for (std::size_t j = i; j < m_Colonnes; j++) {
std::swap(at(i, j), at(j, i));
}
}
}
void Identity() {
for (std::size_t i = 0; i < m_Lignes; i++) {
for (std::size_t j = i; j < m_Colonnes; j++) {
if (i != j) {
at(i, j) = 0;
} else {
at(i, j) = 1;
}
}
}
}
bool IsInverse(const Matrix& mat, const Matrix& aug) const {
Matrix result = mat * aug;
for (std::size_t i = 0; i < m_Lignes; ++i) {
for (std::size_t j = 0; j < m_Colonnes; ++j) {
if ((i == j && !EqualZero(result.at(i, j) - 1.0)) || (i != j && EqualZero(result.at(i, j)))) {
return false;
}
}
}
return true;
}
Matrix GaussNonJordan(bool reduite, bool augmentee) {
Matrix<float> aug = Matrix(m_Lignes, m_Colonnes);
if (augmentee) {
std::size_t choix;
std::cout
<< "Entrez 1 pour rentrer la matrice augmentee que je vous voulez ou 2 pour la matrice augmentee Id pour trouver "
"l'inverse si elle existe."
<< std::endl;
std::cin >> choix;
while (choix != 1 && choix != 2) {
std::cout
<< "Entrez 1 pour rentrer la matrice augmentee que je vous voulez ou 2 pour la matrice augmentee Id pour trouver "
"l'inverse si elle existe."
<< std::endl;
std::cin >> choix;
}
if (choix == 1) {
std::cout << "Rentrez les coefficients de la matrice" << std::endl;
aug.Insert();
} else {
aug.Identity();
}
}
aug.Print();
int r = -1;
for (std::size_t j = 0; j < m_Colonnes; j++) {
std::size_t indice_ligne_maximum = r + 1;
// Recherche maximum
for (std::size_t i = r + 1; i < m_Lignes; i++) {
if (std::abs(at(i, j)) > std::abs(at(indice_ligne_maximum, j)))
indice_ligne_maximum = i;
}
// std::cout << "l'indice du maximum est : " << indice_ligne_maximum << "\n\n";
// Si A[k,j]≠0 alors (A[k,j] désigne la valeur de la ligne k et de la colonne j)
if (at(indice_ligne_maximum, j) != 0) {
r++;
// PrintDebug();
// Si k≠r alors
if (indice_ligne_maximum != r) {
// Échanger les lignes k et r (On place la ligne du pivot en position r)
// std::cout << "On échange les lignes " << indice_ligne_maximum << " et " << r << '\n';
for (std::size_t k = 0; k < m_Colonnes; k++) {
std::swap(at(indice_ligne_maximum, k), at(r, k));
// matrice augmentee
std::swap(aug.at(indice_ligne_maximum, k), aug.at(r, k));
}
}
// Pour i de 1 jusqu'à n (On simplifie les autres lignes)
for (std::size_t i = (reduite ? 0 : j); i < m_Lignes; i++) {
// Si i≠r alors
if (i != r) {
// Soustraire à la ligne i la ligne r multipliée par A[i,j] (de façon à
// annuler A[i,j])
T anulid = at(i, j);
for (int k = m_Colonnes - 1; k >= 0; k--) {
T pivot = at(r, j);
T anul = at(i, j);
at(i, k) = at(i, k) * pivot - at(r, k) * anul;
// matrice augmentee
aug.at(i, k) = aug.at(i, k) * pivot - aug.at(r, k) * anulid;
}
}
}
}
}
return (aug);
}
Matrix GaussJordan(bool reduite, bool augmentee) {
Matrix<float> aug = GaussNonJordan(reduite, augmentee);
for (std::size_t i = 0; i < m_Lignes; i++) {
int k = -1;
int kaugmentee = -1;
for (std::size_t j = 0; j < m_Colonnes; j++) {
if (at(i, j) != 0) {
k = j;
break;
}
}
// ligne de 0
if (k == -1)
break;
// on divise la ligne par (i, k)
T annul = at(i, k);
for (int j = 0; j < m_Colonnes; j++) {
at(i, j) /= annul;
// augmentee
aug.at(i, j) /= annul;
}
}
return aug;
}
T& operator[](std::size_t indice) {
return at(indice);
}
T& at(std::size_t ligne, std::size_t colonne) {
return m_Data[ligne * m_Lignes + colonne];
}
T at(std::size_t ligne, std::size_t colonne) const {
return m_Data[ligne * m_Lignes + colonne];
}
};

12
src/NR.h Normal file
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@@ -0,0 +1,12 @@
#pragma once
class NR {
private:
int m_Numerator;
int m_Denominator;
public:
NR() : m_Numerator(0), m_Denominator(1) {}
NR(int entier) : m_Numerator(entier), m_Denominator(1) {}
NR(int numerator, int denominator) : m_Numerator(numerator), m_Denominator(denominator) {}
};

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@@ -1,166 +1,44 @@
#include <iostream>
#include <vector>
#include <algorithm>
#include "Matrix.h"
template <typename T>
class Matrix
{
private:
std::size_t m_Lignes;
std::size_t m_Colonnes;
std::size_t m_Dimension;
std::vector<T> m_Data;
public:
Matrix(std::size_t lignes, std::size_t colonnes) : m_Lignes(lignes), m_Colonnes(colonnes), m_Dimension(lignes * colonnes)
{
m_Data.resize(m_Dimension);
}
~Matrix() {}
void Print() const
{
for (size_t i = 0; i < m_Lignes; ++i)
{
std::cout << "[ ";
for (size_t j = 0; j < m_Colonnes; ++j)
{
std::size_t indice = i * m_Lignes + j;
std::cout << at(i, j) << " ";
}
std::cout << "]";
std::cout << std::endl;
}
}
void Insert()
{
for (size_t i = 0; i < m_Lignes; ++i)
{
for (size_t j = 0; j < m_Colonnes; ++j)
{
std::cin >> at(i, j);
}
std::cout << std::endl;
}
}
/*
void DivideLine(T div, std::size_t line){
for (size_t i = 0; i < count; i++)
{
}
}
*/
void GaussJordan()
{
int r = -1;
for (std::size_t j = 0; j < m_Colonnes; ++j)
{
std::size_t k = 0;
// Rechercher
for (std::size_t i = r + 1; i < m_Lignes; ++i)
{
if (at(i, j) > at(k, j))
{
k = i;
}
}
Matrix<float> mat_pivot(1, 1);
mat_pivot.at(0, 0) = at(k, j);
if (at(k, j) != 0)
{
++r;
// Diviser
for (std::size_t z = 0; z < m_Colonnes; ++z)
{
at(k, z) /= mat_pivot.at(0, 0);
}
if (k != r)
{
// Echanger
for (std::size_t z = 0; z < m_Colonnes; ++z)
{
std::swap(at(k, z), at(r, z));
}
}
for (std::size_t i = 0; i < m_Lignes; ++i)
{
if (i != r)
{
//Soustraire
for (std::size_t z = 0; z < m_Colonnes; ++z)
{
at(i, z) -= at(r, z) * at(i, j);
}
}
}
}
}
}
T &operator[](std::size_t indice)
{
return at(indice);
}
T &at(std::size_t ligne, std::size_t colonne)
{
return m_Data[ligne * m_Lignes + colonne];
}
T at(std::size_t ligne, std::size_t colonne) const
{
return m_Data[ligne * m_Lignes + colonne];
}
/*std::vector<T>::iterator begin() {
return m_Data.begin();
}
std::vector<T>::iterator end() {
return m_Data.end();
}*/
};
/*
void test()
{
Matrix<float> mat(2, 2);
mat.at(0, 0) = 4;
mat.at(0, 1) = 3;
mat.at(1, 0) = 2;
mat.at(1, 1) = 1;
mat.Print();
mat.GaussJordan();
mat.Print();
void test() {
Matrix<float> mat{"matrice5x5.mat"};
mat.Print();
// mat.Save("matrice3x3.mat");
std::cout << "sdfdjiofoseifheoiefhoig\n";
mat.Print();
mat = {"matrice5x5.mat"};
mat.GaussJordan(false, true);
std::cout << "\nResultat :\n";
mat.Print();
mat.Transpose();
mat.Print();
// mat.Save("matrice4x4echelonne.mat");
}
*/
int main(int argc, char **argv)
{
//test();
std::cout << "hello world!" << std::endl;
std::cout << "Quelle est le nombre de lignes de votre matrice ?" << std::endl;
std::size_t lignes;
std::cin >> lignes;
std::cout << "Quelle est le nombre de colonnes de votre matrice ?" << std::endl;
std::size_t colonnes;
std::cin >> colonnes;
std::size_t dimension = lignes * colonnes;
std::cout << "Rentrez les coefficients de la matrice" << std::endl;
Matrix<float> mat(lignes, colonnes);
void prompt() {
std::cout << "Quelle est le nombre de lignes de votre matrice ?" << std::endl;
std::size_t lignes;
std::cin >> lignes;
std::cout << "Quelle est le nombre de colonnes de votre matrice ?" << std::endl;
std::size_t colonnes;
std::cin >> colonnes;
std::size_t dimension = lignes * colonnes;
std::cout << "Rentrez les coefficients de la matrice" << std::endl;
Matrix<float> mat(lignes, colonnes);
mat.Insert();
mat.Insert();
mat.Print();
mat.GaussJordan();
std::cout << std::endl;
mat.Print();
return 0;
mat.Print();
Matrix<float> aug = mat.GaussJordan(true, true);
std::cout << std::endl;
std::cout << "Matrice echelonnee reduite" << std::endl;
mat.Print();
std::cout << "Matrice augmentee" << std::endl;
aug.Print();
}
int main(int argc, char** argv) {
// test();
prompt();
return 0;
}

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@@ -3,6 +3,7 @@ add_rules("mode.debug", "mode.release")
target("Pivot")
set_kind("binary")
add_files("src/*.cpp")
set_rundir("$(projectdir)/matricies")
--
-- If you want to known more usage about xmake, please see https://xmake.io