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Move bst successor to a class

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This commit is contained in:
Donne Martin
2016-08-14 08:23:11 -04:00
parent 857497115a
commit b91b6a437b
3 changed files with 82 additions and 72 deletions
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43
graphs_trees/bst_successor/bst_successor_challenge.ipynb
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@@ -105,9 +105,11 @@
},
"outputs": [],
"source": [
"def bst_successor(node):\n",
" # TODO: Implement me\n",
" pass"
"class BstSuccessor(object):\n",
"\n",
" def get_next(self, node):\n",
" # TODO: Implement me\n",
" pass"
]
},
{
@@ -141,28 +143,31 @@
"\n",
" @raises(Exception)\n",
" def test_bst_successor_empty(self):\n",
" bst_successor(None)\n",
" bst_successor = BstSuccessor()\n",
" bst_successor.get_next(None)\n",
"\n",
" def test_bst_successor(self):\n",
" nodes = {}\n",
" node = Node(5)\n",
" nodes[5] = node\n",
" nodes[3] = insert(node, 3)\n",
" nodes[8] = insert(node, 8)\n",
" nodes[2] = insert(node, 2)\n",
" nodes[4] = insert(node, 4)\n",
" nodes[6] = insert(node, 6)\n",
" nodes[12] = insert(node, 12)\n",
" nodes[1] = insert(node, 1)\n",
" nodes[7] = insert(node, 7)\n",
" nodes[10] = insert(node, 10)\n",
" nodes[15] = insert(node, 15)\n",
" nodes[9] = insert(node, 9)\n",
" bst = Bst(nodes[5])\n",
" nodes[3] = bst.insert(3)\n",
" nodes[8] = bst.insert(8)\n",
" nodes[2] = bst.insert(2)\n",
" nodes[4] = bst.insert(4)\n",
" nodes[6] = bst.insert(6)\n",
" nodes[12] = bst.insert(12)\n",
" nodes[1] = bst.insert(1)\n",
" nodes[7] = bst.insert(7)\n",
" nodes[10] = bst.insert(10)\n",
" nodes[15] = bst.insert(15)\n",
" nodes[9] = bst.insert(9)\n",
"\n",
" assert_equal(bst_successor(nodes[4]), 5)\n",
" assert_equal(bst_successor(nodes[5]), 6)\n",
" assert_equal(bst_successor(nodes[8]), 9)\n",
" assert_equal(bst_successor(nodes[15]), None)\n",
" bst_successor = BstSuccessor()\n",
" assert_equal(bst_successor.get_next(nodes[4]), 5)\n",
" assert_equal(bst_successor.get_next(nodes[5]), 6)\n",
" assert_equal(bst_successor.get_next(nodes[8]), 9)\n",
" assert_equal(bst_successor.get_next(nodes[15]), None)\n",
"\n",
" print('Success: test_bst_successor')\n",
"\n",