organised 2024 year and added day4 in rust solution

2024/2/part1.cpp

@@ -0,0 +1,81 @@
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <vector>
+#include <chrono>
+
+int main() {
+	std::vector<std::vector<int>> matrix;
+	std::vector<std::string> safeness;
+	int total = 0;
+	int total2 = 0;
+	std::chrono::steady_clock::time_point begin = std::chrono::steady_clock::now();
+
+	std::ifstream file("m");
+	std::string line;
+	while (std::getline(file, line)) {
+		std::vector<int> row;  // Vector to store each row's integers
+		std::stringstream ss(line);  // Stringstream to split the line into integers
+		int num;
+		
+		// Split the line by spaces and store each number in the row vector
+		while (ss >> num) {
+		    row.push_back(num);
+		}
+
+		// Add the row to the 2D vector
+		matrix.push_back(row);
+    	}
+
+	for (int row = 0; row < matrix.size(); row++) {
+		int direction = 0; // positive for increasing, negative for decreasing
+		int temp_total = 0;
+		int temp_total2 = 0;
+		for (int column = 0; column < matrix[row].size()-1; column++) {
+			int diff = matrix[row][column]-matrix[row][column+1];
+			if (diff < 0 && direction > 0) {
+				temp_total += 1;
+			}
+			else if (diff > 0 && direction < 0)  {
+				temp_total += 1;
+			}
+			else if (diff == 0) {
+				temp_total += 1;
+			}
+			else if ((diff > 3) || (diff < -3)) { 
+				temp_total += 1;
+			}
+
+
+			if ((matrix[row].size() - column+3) > 0) {
+				int diff2 = matrix[row][column]-matrix[row][column+2];
+				if (((diff2 < 0 && direction > 0) || (diff2 > 0 && direction < 0)) && ((diff < 0 && direction > 0) || (diff > 0 && direction < 0))) {
+					temp_total2 += 1;
+				}
+				else if (((diff2 > 3) || (diff2 < -3) || (diff2 == 0)) && ((diff > 3) || (diff < -3) || (diff == 0))){ 
+					temp_total2 += 1;
+				}	
+			}
+			if (temp_total > 1) {
+				temp_total = 1;
+			};
+			if (temp_total2 > 1) {
+				temp_total2 = 1;
+			};
+			direction = diff;
+		};
+		total += temp_total;
+		total2 += temp_total2;
+	};
+
+	total = matrix.size() - total;
+	total2 = matrix.size() - total2;
+
+	std::chrono::steady_clock::time_point end = std::chrono::steady_clock::now();
+
+	std::cout << "Part 1: " << total << "\nPart 2: " << total2 << "\n";
+    std::cout << "Time difference = " << std::chrono::duration_cast<std::chrono::microseconds>(end - begin).count() << " microseconds" << std::endl;	
+	
+
+	return 0;
+};

2024/2/s

@@ -0,0 +1,6 @@
+7 6 4 2 1
+1 2 7 8 9
+9 7 6 2 1
+1 3 2 4 5
+8 6 4 4 1
+1 3 6 7 9