Finished part 2.

2022/5/main.cpp

@@ -1,6 +1,7 @@
 #include <algorithm>
 #include <fstream>
 #include <iostream>
+#include <stack>
 #include <string>
 #include <vector>
 
@@ -41,6 +42,7 @@ int main()
 	}
 
 	std::vector<std::vector<char>> stacks;
+	std::vector<std::vector<char>> stacks2;
 
 	// Step 1: Parse Starting Position
 	for(std::string line; std::getline(ifs, line); )
@@ -64,6 +66,7 @@ int main()
 	}
 
 	// DebugOutput(stacks);
+	stacks2 = stacks;
 
 	// Step 3: Parse Actions
 	for(std::string line; std::getline(ifs, line); )
@@ -82,11 +85,25 @@ int main()
 		long from = std::atoi(actions[3].c_str()) - 1;
 		long to = std::atoi(actions[5].c_str()) - 1;
 
+		// Part 1:
 		for(auto i = 0; i < amt; ++i)
 		{
 			stacks[to].push_back(stacks[from].back());
 			stacks[from].pop_back();
 		}
+
+		// Part 2:
+		std::stack<char> temp;
+		for(auto i = 0; i < amt; ++i)
+		{
+			temp.push(stacks2[from].back());
+			stacks2[from].pop_back();
+		}
+		for(auto i = 0; i < amt; ++i)
+		{
+			stacks2[to].push_back(temp.top());
+			temp.pop();
+		}
 	}
 
 	// DebugOutput(stacks);
@@ -94,6 +111,9 @@ int main()
 	for(const auto &st : stacks)
 		std::cout << st.back();
 	std::cout << std::endl;
+	for(const auto &st : stacks2)
+		std::cout << st.back();
+	std::cout << std::endl;
 
 	return 0;
 }