Initial commit

Utility/PriorityQueue.js

@@ -0,0 +1,30 @@
+class PriorityQueue {
+    constructor() {
+        this.items = [];
+    };
+
+    enqueue(item, priority) {
+        const element = { item, priority };
+        let added = false;
+
+        for (let i = 0; i < this.items.length; i++) {
+            if (priority < this.items[i].priority) {
+                this.items.splice(i, 0, element);
+                added = true;
+                break;
+            };
+        };
+
+        if (!added) this.items.push(element);
+    }
+
+    dequeue() {
+        return this.isEmpty() ? null : this.items.shift().item;
+    }
+
+    isEmpty() {
+        return this.items.length === 0;
+    }
+};
+
+module.exports = PriorityQueue;