mirror of https://github.com/Askill/AP-SCE.git
133 lines
2.2 KiB
C++
133 lines
2.2 KiB
C++
#include "lgs.h"
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#include "time.h"
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#include <iostream>
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using namespace std;
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void LGS::data_entry()
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{
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char auswahl = 'n';
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//Data entry
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while (auswahl == 'n')
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{
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cout << "Anzahl der Unbekannten: "; cin >> variables;
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creat_array();
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cout << "Geben Sie die Gleichungen nach folgendem Schema an:" << endl;
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print_exp();
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for (int i = 0; i < variables; ++i)
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{
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for (int n = 0; n < variables+1; ++n)
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{
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cout << " ";
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int var = n + 65;
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cout << (char)var << i + 1 << ": ";
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cin >> GA[i][n];
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}
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print_ln(i);
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cout << endl;
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}
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print();
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cout << "Sind die Angaben Korrekt? j/n "; cin >> auswahl;
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}
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cout << endl;
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}
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void LGS::creat_array()
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{
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GA = new long double*[variables];
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for (int i = 0; i < variables; ++i)
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GA[i] = new long double[variables+1];
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}
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void LGS::print()
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{
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for (int i = 0; i < variables; ++i)
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{
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for (int n = 0; n < variables + 1; ++n)
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{
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cout << (GA[i][n] >= 0 ? (n == 0 ? " " : " +") : " ") << GA[i][n] << " ";
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if (n == variables-1)
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cout << "= ";
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}
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cout << endl;
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}
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}
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void LGS::print_ln(int ln)
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{
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for (int n = 0; n < variables + 1; ++n)
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{
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int var = 123 - variables + n;
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cout << (GA[ln][n] >= 0 ? (n==0 ? " " : " +"): " ") << GA[ln][n] << (var!=123 ? (char)var : ' ');
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if (n == variables - 1)
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cout << "= ";
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}
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cout << endl;
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}
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void LGS::print_exp()
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{
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for (int i = 0; i < variables; ++i)
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{
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for (int n = 0; n < variables + 1; ++n)
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{
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int var1 = n + 65;
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int var2 = 123 - variables + n;
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cout << "[" << (char)var1 << i + 1; var2!=123 ? cout<< (" *") << (char)var2 : cout << ""; cout << "]";
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if (n == variables - 1)
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cout << "= ";
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}
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cout << endl;
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}
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}
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float LGS::cramer()
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{
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double t1 = clock();
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return (float)((clock() - t1) / CLOCKS_PER_SEC);
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}
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float LGS::gauss()
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{
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double t1 = clock();
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gauss_down();
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gauss_up();
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return (float)((clock() - t1) / CLOCKS_PER_SEC);
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}
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void LGS::gauss_down( )
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{
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for(int stage = 1; stage < variables ; stage++)
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{
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long double div = (GA[stage][stage-1] / GA[stage-1][stage-1]);
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for (int i = 0; i < variables-1 && stage+i < variables; i++)
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{
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for (int n = 0; n <= variables; n++)
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{
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GA[stage + i][n] = GA[stage + i][n] - (GA[stage - 1][n] * div);
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}
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}
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print();
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cout << endl;
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}
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}
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void LGS::gauss_up()
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{
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}
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