GitHub/interactive-coding-challenges
1
0
Fork 0
mirror of https://github.com/donnemartin/interactive-coding-challenges synced 2026-01-09 10:58:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Polish tree bfs challenge and solution (#77)

Browse Source 
Update constraints and algorithm discussion.
This commit is contained in:
Donne Martin
2016-06-25 08:26:19 -04:00
committed by GitHub
parent 1321723eb9
commit c7854b69cc
2 changed files with 25 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
graphs_trees/tree_bfs/bfs_challenge.ipynb
View File

@@ -18,7 +18,7 @@
"cell_type": "markdown", "cell_type": "markdown",
"metadata": {}, "metadata": {},
"source": [ "source": [
"## Problem: Implement breadth-first search on a binary tree.\n", "## Problem: Implement breadth-first traversal on a binary tree.\n",
"\n", "\n",
"* [Constraints](#Constraints)\n", "* [Constraints](#Constraints)\n",
"* [Test Cases](#Test-Cases)\n", "* [Test Cases](#Test-Cases)\n",
@@ -34,7 +34,11 @@
"## Constraints\n", "## Constraints\n",
"\n", "\n",
"* Can we assume we already have a Node class with an insert method?\n", "* Can we assume we already have a Node class with an insert method?\n",
" * Yes" " * Yes\n",
"* Can we assume this fits in memory?\n",
" * Yes\n",
"* What should we do with each node when we process it?\n",
" * Call an input method `visit_func` on the node"
] ]
}, },
{ {
@@ -43,7 +47,7 @@
"source": [ "source": [
"## Test Cases\n", "## Test Cases\n",
"\n", "\n",
"### Breadth-First Search\n", "### Breadth-First Traversal\n",
"* 5, 2, 8, 1, 3 -> 5, 2, 8, 1, 3" "* 5, 2, 8, 1, 3 -> 5, 2, 8, 1, 3"
] ]
}, },
@@ -156,21 +160,21 @@
], ],
"metadata": { "metadata": {
"kernelspec": { "kernelspec": {
"display_name": "Python 2", "display_name": "Python 3",
"language": "python", "language": "python",
"name": "python2" "name": "python3"
}, },
"language_info": { "language_info": {
"codemirror_mode": { "codemirror_mode": {
"name": "ipython", "name": "ipython",
"version": 2 "version": 3
}, },
"file_extension": ".py", "file_extension": ".py",
"mimetype": "text/x-python", "mimetype": "text/x-python",
"name": "python", "name": "python",
"nbconvert_exporter": "python", "nbconvert_exporter": "python",
"pygments_lexer": "ipython2", "pygments_lexer": "ipython3",
"version": "2.7.10" "version": "3.5.0"
} }
}, },
"nbformat": 4, "nbformat": 4,

22
graphs_trees/tree_bfs/bfs_solution.ipynb
View File

@@ -18,7 +18,7 @@
"cell_type": "markdown", "cell_type": "markdown",
"metadata": {}, "metadata": {},
"source": [ "source": [
"## Problem: Implement breadth-first search on a binary tree.\n", "## Problem: Implement breadth-first traversal on a binary tree.\n",
"\n", "\n",
"* [Constraints](#Constraints)\n", "* [Constraints](#Constraints)\n",
"* [Test Cases](#Test-Cases)\n", "* [Test Cases](#Test-Cases)\n",
@@ -34,7 +34,11 @@
"## Constraints\n", "## Constraints\n",
"\n", "\n",
"* Can we assume we already have a Node class with an insert method?\n", "* Can we assume we already have a Node class with an insert method?\n",
" * Yes" " * Yes\n",
"* Can we assume this fits in memory?\n",
" * Yes\n",
"* What should we do with each node when we process it?\n",
" * Call an input method `visit_func` on the node"
] ]
}, },
{ {
@@ -43,7 +47,7 @@
"source": [ "source": [
"## Test Cases\n", "## Test Cases\n",
"\n", "\n",
"### Breadth-First Search\n", "### Breadth-First Traversal\n",
"* 5, 2, 8, 1, 3 -> 5, 2, 8, 1, 3" "* 5, 2, 8, 1, 3 -> 5, 2, 8, 1, 3"
] ]
}, },
@@ -61,7 +65,7 @@
"\n", "\n",
"Complexity:\n", "Complexity:\n",
"* Time: O(n)\n", "* Time: O(n)\n",
"* Space: O(n)" "* Space: O(n), extra space for the queue"
] ]
}, },
{ {
@@ -191,21 +195,21 @@
], ],
"metadata": { "metadata": {
"kernelspec": { "kernelspec": {
"display_name": "Python 2", "display_name": "Python 3",
"language": "python", "language": "python",
"name": "python2" "name": "python3"
}, },
"language_info": { "language_info": {
"codemirror_mode": { "codemirror_mode": {
"name": "ipython", "name": "ipython",
"version": 2 "version": 3
}, },
"file_extension": ".py", "file_extension": ".py",
"mimetype": "text/x-python", "mimetype": "text/x-python",
"name": "python", "name": "python",
"nbconvert_exporter": "python", "nbconvert_exporter": "python",
"pygments_lexer": "ipython2", "pygments_lexer": "ipython3",
"version": "2.7.10" "version": "3.5.0"
} }
}, },
"nbformat": 4, "nbformat": 4,