Solution for 2015 Day 2 part 1 (C++)

Signed-off-by: Sebastian Lukas <[email protected]>

.gitignore

@@ -31,4 +31,5 @@
 *.out
 *.app
 
-**/bin/**
+**/bin/**
+.vscode/settings.json

2015/Day2/day2.cpp

@@ -0,0 +1,44 @@
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <string>
+#include <vector>
+#include <algorithm>
+
+std::vector<int> split (const std::string &s, char delim) {
+    std::vector<int> result;
+    std::stringstream ss (s);
+    std::string item;
+
+    while (getline (ss, item, delim)) {
+        result.push_back (std::stoi(item));
+    }
+    return result;
+}
+
+int main() {
+
+    std::ifstream input {"input.txt"};
+    std::string line;
+    std::vector<int> v_input;
+    int wrapping_paper_sqfeet = 0;
+    int actual_box = 0;
+    int side_l_w, side_w_h, side_h_l = 0;
+
+    if (input.good()) {
+        while (input >> line) {
+            v_input = split(line, 'x');
+
+            side_l_w = v_input[0] * v_input[1];
+            side_w_h = v_input[1] * v_input[2];
+            side_h_l = v_input[2] * v_input[0];
+            std::vector<int> sides {side_l_w, side_w_h, side_h_l};
+
+            actual_box = 2 * side_l_w + 2 * side_w_h + 2 * side_h_l + *std::min_element(sides.begin(), sides.end());
+
+            wrapping_paper_sqfeet += actual_box;
+        }
+    }
+
+    std::cout << "Total sqaure feet of wrapping paper: " << wrapping_paper_sqfeet;
+}