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Momen-G-Ar · Nov 30, 2022 · 8a785cc · 8a785cc
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diff --git a/Genetic Algorithm.sln b/Genetic Algorithm.sln
@@ -0,0 +1,31 @@
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diff --git a/Genetic Algorithm/Genetic Algorithm.vcxproj b/Genetic Algorithm/Genetic Algorithm.vcxproj
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diff --git a/Genetic Algorithm/Genetic Algorithm.vcxproj.filters b/Genetic Algorithm/Genetic Algorithm.vcxproj.filters
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diff --git a/Genetic Algorithm/src.cpp b/Genetic Algorithm/src.cpp
@@ -0,0 +1,193 @@
+#include<iostream>
+#include <vector>
+#include <algorithm>
+
+using namespace std;
+
+void genetic_algorithm(vector <vector <int>>& chromosomes);
+vector <int> generate_chromosome();
+void generate_chromosomes(vector <vector <int>>& chromosomes);
+void cross_over(vector <vector <int>>& chromosomes, vector <vector <int>>& children);
+void mutation(vector <vector <int>>& children);
+void selection(vector <vector <int>>& chromosomes, vector <vector <int>>& children);
+int fitness(const vector <int>& chromosome);
+bool check_status_of_chromosome(int r, int c, const vector <int>& chromosome);
+void print_final_chromosome(const vector <int>& chromosome);
+
+#define NUMBER_OF_CHROMOSOMES 200
+
+void main()
+{
+	srand(time(NULL)); // To make the rand is not static 
+	vector <vector <int>> chromosomes(NUMBER_OF_CHROMOSOMES, vector <int> (8));
+	generate_chromosomes(chromosomes); // generat the first generation 
+	genetic_algorithm(chromosomes); // start the genetic algorithm
+}
+
+// The genetic algorithm function 
+void genetic_algorithm(vector <vector <int>>& chromosomes)
+{
+	int itearation = 0; // number of iterations 
+	while (fitness(chromosomes[0]) != 8)
+	{
+		vector <vector <int>> children;
+		cross_over(chromosomes, children);
+		mutation(children);
+		selection(chromosomes, children);
+
+		cout << "\nIteration Number => " << ++itearation << '\n';
+		cout << "Best Rank = " << fitness(chromosomes[0]) << '\n';
+		cout << "_______________________________\n";
+	}
+	print_final_chromosome(chromosomes[0]);
+}
+
+void generate_chromosomes(vector <vector <int>>& chromosomes)
+{
+	for (int i = 0; i < NUMBER_OF_CHROMOSOMES; i++)
+	{
+		chromosomes[i] = generate_chromosome();
+	}
+}
+
+vector <int> generate_chromosome()
+{
+	vector <int> chromosome(8);
+	for (int i = 0; i < 8; i++)
+	{
+		chromosome[i] = (rand() % 8);
+	}
+	return chromosome;
+}
+
+void cross_over(vector <vector <int>>& chromosomes, vector <vector <int>>& children)
+{
+	vector <vector <int>> result_of_cross_over;
+
+	for (int i = 0; i < NUMBER_OF_CHROMOSOMES; i += 2)
+	{
+		vector <int> parent1 = chromosomes[i];
+		vector <int> parent2 = chromosomes[i + 1];
+		vector <int> child1(8);
+		vector <int> child2(8);
+
+		int split = 1 + (rand() % 7);
+		for (int i = 0; i < 8; i++)
+		{
+			if (i < split)
+			{
+				child1[i] = parent1[i];
+			}
+			else
+			{
+				child1[i] = parent2[i];
+			}
+		}
+		for (int i = 0; i < 8; i++)
+		{
+			if (i < split)
+			{
+				child2[i] = parent2[i];
+			}
+			else
+			{
+				child2[i] = parent1[i];
+			}
+		}
+		result_of_cross_over.emplace_back(child1);
+		result_of_cross_over.emplace_back(child2);
+	}
+	children = result_of_cross_over;
+}
+
+void mutation(vector <vector <int>>& children)
+{
+	for (int i = 0; i < NUMBER_OF_CHROMOSOMES; i++)
+	{
+		int n = 1 + (rand() % 7);
+		for (int j = 0; j < n; j++)
+		{
+			int choise = rand() % 2;
+			if (choise)
+				children[i][(rand() % 8)] = (rand() % 8);
+		}
+	}
+}
+
+void selection(vector <vector <int>>& chromosomes, vector <vector <int>>& children)
+{
+	vector <vector <int>> v;
+	for (int i = 0; i < NUMBER_OF_CHROMOSOMES; i++)
+		v.emplace_back(chromosomes[i]);
+	for (int i = 0; i < NUMBER_OF_CHROMOSOMES; i++)
+		v.emplace_back(children[i]);
+
+	sort(v.rbegin(), v.rend(), [](const vector <int>& v1, const vector <int>& v2) {return fitness(v1) < fitness(v2); });
+
+	for (int i = 0; i < NUMBER_OF_CHROMOSOMES; i++)
+		chromosomes[i] = v[i];
+}
+
+
+int fitness(const vector <int>& chromosome)
+{
+	int rank = 0;
+	for (int i = 0; i < 8; i++)
+	{
+		int r = i, c = chromosome[i];
+		rank += check_status_of_chromosome(r, c, chromosome);
+	}
+	return rank;
+}
+
+bool check_status_of_chromosome(int r, int c, const vector <int>& chromosome)
+{
+	// check columns
+	for (int i = 0; i < 8; i++)
+	{
+		if (i != r && chromosome[i] == c)
+			return false;
+	}
+
+	// check diagonals:
+	// main diagonal
+	for (int i = r + 1, j = c + 1; i < 8 && j < 8; i++, j++)
+	{
+		if (chromosome[i] == j)
+			return false;
+	}
+	for (int i = r - 1, j = c - 1; i >= 0 && j >= 0; i--, j--)
+	{
+		if (chromosome[i] == j)
+			return false;
+	}
+	// reverse diagonal
+	for (int i = r - 1, j = c + 1; i >= 0 && j < 8; i--, j++)
+	{
+		if (chromosome[i] == j)
+			return false;
+	}
+	for (int i = r + 1, j = c - 1; i < 8 && j >= 0; i++, j--)
+	{
+		if (chromosome[i] == j)
+			return false;
+	}
+	return true;
+}
+
+void print_final_chromosome(const vector <int>& chromosome)
+{
+	cout << "\n_______________________________\n\nFinished, Congrats\nThe final order is : \n\n";
+	for (int i = 0; i < 8; i++)
+	{
+		for (int j = 0; j < 8; j++)
+		{
+			if (chromosome[i] == j)
+				cout << "Q" << " ";
+			else
+				cout << "*" << " ";
+		}
+		cout << '\n';
+	}
+	cout << "\n\n";
+}