Add sort function for number sorting

common.js

@@ -14,4 +14,16 @@ export function loadInput(dayNumber, parsingFunction, literalPath = false) {
     const data = fs.readFileSync(filePath, "utf8");
 
     return typeof parsingFunction == "function" ? parsingFunction(data) : data;
+}
+
+/**
+ * Comparator for sorting numbers into ascending order
+ *
+ * @param {number} a
+ * @param {number} b
+ *
+ * @returns {-1|0|1}
+ */
+export function numericAscSort(a, b) {
+    return a - b;
 }