GitHub/interactive-coding-challenges
1
0
Fork 0
mirror of https://github.com/donnemartin/interactive-coding-challenges synced 2026-01-11 11:58:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Polish delete mid node challenge and solution

Browse Source 
Update edge cases and tests.
This commit is contained in:
Donne Martin
2016-06-18 11:46:00 -04:00
parent 99239dda62
commit 37cf2028e6
3 changed files with 36 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
linked_lists/delete_mid/delete_mid_solution.ipynb
View File

@@ -96,9 +96,10 @@
"class MyLinkedList(LinkedList):\n",
"\n",
" def delete_node(self, node):\n",
" if self.head is None:\n",
" if self.head is None or node is None:\n",
" return\n",
" if node is None:\n",
" if self.head == node:\n",
" self.head = None\n",
" return\n",
" if node.next is None:\n",
" node.data = None\n",
@@ -147,16 +148,25 @@
" head = Node(2)\n",
" linked_list = MyLinkedList(head)\n",
" linked_list.delete_node(head)\n",
" assert_equal(linked_list.get_all_data(), [None])\n",
" assert_equal(linked_list.get_all_data(), [])\n",
"\n",
" print('Test: Multiple nodes')\n",
" linked_list = MyLinkedList(None)\n",
" node0 = linked_list.insert_to_front(1)\n",
" node0 = linked_list.insert_to_front(2)\n",
" node1 = linked_list.insert_to_front(3)\n",
" node2 = linked_list.insert_to_front(4)\n",
" node3 = linked_list.insert_to_front(1)\n",
" linked_list.delete_node(node2)\n",
" assert_equal(linked_list.get_all_data(), [1, 3, 1])\n",
" linked_list.delete_node(node1)\n",
" assert_equal(linked_list.get_all_data(), [1, 4, 2])\n",
"\n",
" print('Test: Multiple nodes, delete last element')\n",
" linked_list = MyLinkedList(None)\n",
" node0 = linked_list.insert_to_front(2)\n",
" node1 = linked_list.insert_to_front(3)\n",
" node2 = linked_list.insert_to_front(4)\n",
" node3 = linked_list.insert_to_front(1)\n",
" linked_list.delete_node(node0)\n",
" assert_equal(linked_list.get_all_data(), [1, 4, 3, None])\n",
"\n",
" print('Success: test_delete_node')\n",
"\n",
@@ -184,6 +194,7 @@
"Test: Empty list, null node to delete\n",
"Test: One node\n",
"Test: Multiple nodes\n",
"Test: Multiple nodes, delete last element\n",
"Success: test_delete_node\n"
]
}
@@ -209,7 +220,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.4.3"
"version": "3.5.0"
}
},
"nbformat": 4,