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Author: saliaqat

04_cohort_three/live_code/4_recursive_ds.ipynb

@@ -585,7 +585,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 2,
    "id": "23428e44",
    "metadata": {},
    "outputs": [],
@@ -610,7 +610,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 3,
    "id": "32ada213",
    "metadata": {},
    "outputs": [],
@@ -619,16 +619,16 @@
     "  visited = set()\n",
     "  queue = deque([start])\n",
     "\n",
-    "  while queue:\n",
-    "    current_vertex = queue.popleft()\n",
+    "  while queue: # While our queue isn't empty, do the following\n",
+    "    current_vertex = queue.popleft() # Look and remove at the first element in our queue\n",
     "\n",
-    "    if current_vertex not in visited:\n",
+    "    if current_vertex not in visited: # If it hasn't been visited, then:\n",
     "      # Process the current vertex\n",
-    "      print(current_vertex, end=' ')\n",
-    "      visited.add(current_vertex)\n",
+    "      print(current_vertex, end=' ') # Print it\n",
+    "      visited.add(current_vertex) # Add it as visited\n",
     "\n",
     "      # Enqueue unvisited neighbors\n",
-    "      for neighbor in graph.graph.get(current_vertex, []):\n",
+    "      for neighbor in graph.graph.get(current_vertex, []): # Add all of the vertex's neighbours to the queue (if not visi))\n",
     "        if neighbor not in visited:\n",
     "          queue.append(neighbor)"
    ]
@@ -643,15 +643,15 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 12,
    "id": "3b8d278a",
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "1 3 6 10 7 "
+      "15 "
      ]
     }
    ],
@@ -665,7 +665,7 @@
     "ex_graph.add_edge(7, [10, 6])\n",
     "\n",
     "# Perform BFS starting from vertex 1\n",
-    "bfs(ex_graph, 1)"
+    "bfs(ex_graph, 15)"
    ]
   },
   {
@@ -680,7 +680,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": 9,
    "id": "d883118d",
    "metadata": {},
    "outputs": [],
@@ -709,20 +709,20 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 10,
    "id": "c4b48ff8",
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "1 3 6 10 7 "
+      "1 3 10 7 6 "
      ]
     }
    ],
    "source": [
-    "bfs(ex_graph, 1)"
+    "recursive_preorder_traversal(ex_graph, 1)"
    ]
   },
   {