Streamline 2024 day 1

2024/day-01/main.cpp

@@ -1,47 +1,35 @@
-#include <fstream>
+#include <algorithm>
 #include <iostream>
 #include <vector>
 
 using namespace std;
 
-void sort(vector<int> &list)
+void readInput(vector<int> &list1, vector<int> &list2)
 {
-    for (size_t i = 0; i < list.size() - 1; i++) {
-        for (size_t j = i + 1; j < list.size(); j++) {
-            if (list[i] > list[j]) {
-                int temp = list[i];
-                list[i] = list[j];
-                list[j] = temp;
-            }
-        }
+    int value1, value2;
+    while (cin >> value1 >> value2) {
+        list1.push_back(value1);
+        list2.push_back(value2);
     }
 }
 
-int main()
+void sortLists(vector<int> &list1, vector<int> &list2)
 {
-    vector<int> list1, list2;
+    sort(list1.begin(), list1.end());
+    sort(list2.begin(), list2.end());
+}
 
-    {
-        ifstream inputFile("input");
-        string line;
-        while (getline(inputFile, line)) {
-            list1.push_back(stoi(line.substr(0, 5)));
-            list2.push_back(stoi(line.substr(8, 5)));
-        }
-    }
-
-    sort(list1);
-    sort(list2);
-
-    // Part one
+int calculateTotalDistance(const vector<int> &list1, const vector<int> &list2)
+{
     int totalDistance = 0;
     for (size_t i = 0; i < list1.size(); i++) {
-        int distance = list1[i] - list2[i];
-        totalDistance += (distance >= 0) ? distance : -distance;
+        totalDistance += abs(list1[i] - list2[i]);
     }
-    cout << "Total distance between the lists: " << totalDistance << endl;
+    return totalDistance;
+}
 
-    // Part two
+int calculateSimilarityScore(const vector<int> &list1, const vector<int> &list2)
+{
     int similarityScore = 0;
     size_t index2 = 0;
     for (size_t index1 = 0; index1 < list1.size(); index1++) {
@@ -53,5 +41,19 @@ int main()
             index2++;
         }
     }
-    cout << "Similarity Score: " << similarityScore << endl;
+    return similarityScore;
+}
+
+int main()
+{
+    vector<int> list1, list2;
+    readInput(list1, list2);
+
+    sortLists(list1, list2);
+
+    // Part one
+    cout << "Total distance between the lists: " << calculateTotalDistance(list1, list2) << endl;
+
+    // Part two
+    cout << "Similarity Score: " << calculateSimilarityScore(list1, list2) << endl;
 }