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{
"metadata": {
"name": "",
"signature": "sha256:359ba0990b58235e80b2e0192de2b1c02844fb6d8275025bc2e3f3cf33cfcdf1"
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"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 17: Advanced Pointers "
]
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 17.1, Page number: 331"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"# Structure declaration\n",
"from ctypes import *\n",
"\n",
"class person (Structure) :\n",
"_fields_ = [(\"name\", c_wchar_p), (\"address\", c_wchar_p), (\"city_state_zip\", c_wchar_p), (\"age\", c_int), (\"height\", c_float)]"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 17.2, Page number: 336"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"# Function declaration\n",
"def lookup (name) :\n",
" lists = ['John', 'Jim', 'Jane', 'Clyde']\n",
" result = 0\n",
"\n",
" for index in range (0, 4) :\n",
" if (lists[index] == name) :\n",
" result = 1\n",
" break\n",
" \n",
" return result\n",
"\n",
"# Calculation and result\n",
"name = 'Jane'\n",
"\n",
"if (lookup (name)) :\n",
" print ('%s is in the list\\n' % name)\n",
"else :\n",
" print ('%s is not in the list\\n' % name)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Jane is in the list\n",
"\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 17.3, Page number: 338"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"# Declaration and result\n",
"aList = [45, 89, 123]\n",
"\n",
"aList.insert(1, 53)\n",
"\n",
"print 'Final List : ', aList"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Final List : [45, 53, 89, 123]\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Example 17.4, Page number: 348"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"# Class declaration\n",
"class Node:\n",
" def __init__(self, val):\n",
" self.l_child = None\n",
" self.r_child = None\n",
" self.data = val\n",
"\n",
"def binary_insert(root, node):\n",
" if root is None:\n",
" root = node\n",
" else:\n",
" if root.data > node.data:\n",
" if root.l_child == None:\n",
" root.l_child = node\n",
" else:\n",
" binary_insert(root.l_child, node)\n",
" else:\n",
" if root.r_child == None:\n",
" root.r_child = node\n",
" else:\n",
" binary_insert(root.r_child, node)\n",
"\n",
"def in_order_print(root):\n",
" if not root:\n",
" return\n",
" in_order_print(root.l_child)\n",
" print root.data\n",
" in_order_print(root.r_child)\n",
"\n",
"r = Node('Lemon')\n",
"binary_insert(r, Node('Plum'))\n",
"binary_insert(r, Node('Apple'))\n",
"binary_insert(r, Node('Orange'))\n",
"binary_insert(r, Node('Pear'))\n",
"binary_insert(r, Node('Grape'))\n",
"\n",
"\n",
"# Result\n",
"print \"List of words in ASCII order:\"\n",
"in_order_print(r)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"List of words in ASCII order:\n",
"Apple\n",
"Grape\n",
"Lemon\n",
"Orange\n",
"Pear\n",
"Plum\n"
]
}
],
"prompt_number": 4
}
],
"metadata": {}
}
]
}
|
