Day 3

Day3/part1.cpp

@@ -0,0 +1,36 @@
+#include <iostream>
+#include <string>
+#include <algorithm>
+
+using namespace std;
+
+int main(int argc, char* argv[])
+{
+    int total = 0;
+
+    string line;
+    while(getline(cin, line))
+    {
+        string half1 = line.substr(0, line.size()/2);
+        string half2 = line.substr(line.size()/2);
+
+        sort(half1.begin(), half1.end());
+        sort(half2.begin(), half2.end());
+
+        string remaining;
+        set_intersection(half1.begin(), half1.end(), half2.begin(), half2.end(), back_inserter(remaining));
+
+        int value;
+        if (remaining[0] >= 'a')
+        {
+            value = remaining[0]-'a'+1;
+        }
+        else
+        {
+            value = remaining[0]-'A'+27;
+        }
+        
+        total += value;
+    }
+    cout << total << endl;
+}