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| author | root | 2014-07-14 15:31:28 +0530 |
|---|---|---|
| committer | root | 2014-07-14 15:31:28 +0530 |
| commit | 5a3a66e158c99bbf7900278d8e7056136d628dbe (patch) | |
| tree | 6d8c0f65acb3e9451d5092e8d718e7febcbd0d05 /Schaum's_Outlines:_Programming_with_C++/ch6.ipynb | |
| parent | 69aa63da6cb2bc3f5822533e3f97c46d7efbaafc (diff) | |
| download | Python-Textbook-Companions-5a3a66e158c99bbf7900278d8e7056136d628dbe.tar.gz Python-Textbook-Companions-5a3a66e158c99bbf7900278d8e7056136d628dbe.tar.bz2 Python-Textbook-Companions-5a3a66e158c99bbf7900278d8e7056136d628dbe.zip | |
adding books
Diffstat (limited to 'Schaum's_Outlines:_Programming_with_C++/ch6.ipynb')
| -rwxr-xr-x | Schaum's_Outlines:_Programming_with_C++/ch6.ipynb | 1276 |
1 files changed, 1276 insertions, 0 deletions
diff --git a/Schaum's_Outlines:_Programming_with_C++/ch6.ipynb b/Schaum's_Outlines:_Programming_with_C++/ch6.ipynb new file mode 100755 index 00000000..2c52f179 --- /dev/null +++ b/Schaum's_Outlines:_Programming_with_C++/ch6.ipynb @@ -0,0 +1,1276 @@ +{
+ "metadata": {
+ "name": "ch6"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 6: Arrays"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.1, page no. 126"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "a = [0, 0, 0]\n",
+ "a[2] = 55.55\n",
+ "a[0] = 11.11\n",
+ "a[1] = 33.33\n",
+ "print \"a[0] = \" , a[0] \n",
+ "print \"a[1] = \" , a[1] \n",
+ "print \"a[2] = \" , a[2] \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "a[0] = 11.11\n",
+ "a[1] = 33.33\n",
+ "a[2] = 55.55\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.2, page no. 127"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "SIZE=5 # defines the size N for 5 elements\n",
+ "a = []\n",
+ "# declares the array's elements as type double\n",
+ "print \"Enter \" , SIZE , \" numbers:\\t\"\n",
+ "for i in range(SIZE):\n",
+ " a.append(float(raw_input()))\n",
+ " \n",
+ "print \"In reverse order: \"\n",
+ "for i in range(SIZE-1,-1,-1):\n",
+ " print \"\\t\" , a[i]\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Enter 5 numbers:\t\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "11.11\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "33.33\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "55.55\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "77.77\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "99.99\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "In reverse order: \n",
+ "\t99.99\n",
+ "\t77.77\n",
+ "\t55.55\n",
+ "\t33.33\n",
+ "\t11.11\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.3, page no. 128"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "a = [ 22.2, 44.4, 66.6 ]\n",
+ "\n",
+ "size = len(a)\n",
+ "for i in range(size):\n",
+ " print \"\\ta[\" , i , \"] = \" , a[i]\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\ta[ 0 ] = 22.2\n",
+ "\ta[ 1 ] = 44.4\n",
+ "\ta[ 2 ] = 66.6\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.4, page no. 128"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "a = [ 22.2, 44.4, 66.6 , 0 ,0,0,0]\n",
+ "size = len(a)\n",
+ "for i in range(size):\n",
+ " print \"\\ta[\" , i , \"] = \" , a[i] \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\ta[ 0 ] = 22.2\n",
+ "\ta[ 1 ] = 44.4\n",
+ "\ta[ 2 ] = 66.6\n",
+ "\ta[ 3 ] = 0\n",
+ "\ta[ 4 ] = 0\n",
+ "\ta[ 5 ] = 0\n",
+ "\ta[ 6 ] = 0\n"
+ ]
+ }
+ ],
+ "prompt_number": 4
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.5, page no. 129"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import numpy\n",
+ "SIZE = 4\n",
+ "a = numpy.zeros(4)\n",
+ "# declares the array's elements as type float\n",
+ "for i in range(SIZE):\n",
+ " print \"\\ta[\" , i , \"] = \" , a[i]\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\ta[ 0 ] = 0.0\n",
+ "\ta[ 1 ] = 0.0\n",
+ "\ta[ 2 ] = 0.0\n",
+ "\ta[ 3 ] = 0.0\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.6, page no. 129"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "SIZE=4\n",
+ "a = [ 33.3, 44.4, 55.5, 66.6 ]\n",
+ "for i in range(7): # ERROR: index is out of bounds!\n",
+ " print \"\\ta[\" , i , \"] = \" , a[i] \n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "ename": "IndexError",
+ "evalue": "list index out of range",
+ "output_type": "pyerr",
+ "traceback": [
+ "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[1;31mIndexError\u001b[0m Traceback (most recent call last)",
+ "\u001b[1;32m<ipython-input-1-b39022f1d3ab>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m 2\u001b[0m \u001b[0ma\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;33m[\u001b[0m \u001b[1;36m33.3\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;36m44.4\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;36m55.5\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;36m66.6\u001b[0m \u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 3\u001b[0m \u001b[1;32mfor\u001b[0m \u001b[0mi\u001b[0m \u001b[1;32min\u001b[0m \u001b[0mrange\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;36m7\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m:\u001b[0m \u001b[1;31m# ERROR: index is out of bounds!\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m----> 4\u001b[1;33m \u001b[1;32mprint\u001b[0m \u001b[1;34m\"\\ta[\"\u001b[0m \u001b[1;33m,\u001b[0m \u001b[0mi\u001b[0m \u001b[1;33m,\u001b[0m \u001b[1;34m\"] = \"\u001b[0m \u001b[1;33m,\u001b[0m \u001b[0ma\u001b[0m\u001b[1;33m[\u001b[0m\u001b[0mi\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 5\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n",
+ "\u001b[1;31mIndexError\u001b[0m: list index out of range"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\ta[ 0 ] = 33.3\n",
+ "\ta[ 1 ] = 44.4\n",
+ "\ta[ 2 ] = 55.5\n",
+ "\ta[ 3 ] = 66.6\n",
+ "\ta[ 4 ] = "
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.7, page no. 130"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "a = [ 22.2, 44.4, 66.6 ]\n",
+ "x=11.1\n",
+ "print \"x = \" , x \n",
+ "a.append(88.8) # ERROR: index is out of bounds!\n",
+ "print \"x = \" , x \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " x = 11.1\n",
+ "x = 11.1\n"
+ ]
+ }
+ ],
+ "prompt_number": 7
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.8, page no. 130"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "a = [ 22.2, 44.4, 66.6 ]\n",
+ "x=11.1\n",
+ "print \"x = \" , x \n",
+ "a[3333] = 88.8 # ERROR: index is out of bounds!\n",
+ "print \"x = \" , x \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "ename": "IndexError",
+ "evalue": "list assignment index out of range",
+ "output_type": "pyerr",
+ "traceback": [
+ "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[1;31mIndexError\u001b[0m Traceback (most recent call last)",
+ "\u001b[1;32m<ipython-input-8-63b6c8e60294>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m 6\u001b[0m \u001b[0mx\u001b[0m\u001b[1;33m=\u001b[0m\u001b[1;36m11.1\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 7\u001b[0m \u001b[1;32mprint\u001b[0m \u001b[1;34m\"x = \"\u001b[0m \u001b[1;33m,\u001b[0m \u001b[0mx\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m----> 8\u001b[1;33m \u001b[0ma\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;36m3333\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;36m88.8\u001b[0m \u001b[1;31m# ERROR: index is out of bounds!\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 9\u001b[0m \u001b[1;32mprint\u001b[0m \u001b[1;34m\"x = \"\u001b[0m \u001b[1;33m,\u001b[0m \u001b[0mx\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
+ "\u001b[1;31mIndexError\u001b[0m: list assignment index out of range"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "x = 11.1\n"
+ ]
+ }
+ ],
+ "prompt_number": 8
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.9, page no. 131"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def sum_(a):\n",
+ " s = 0\n",
+ " for i in a:\n",
+ " s += i\n",
+ " return s\n",
+ " \n",
+ "a = [ 11, 33, 55, 77 ]\n",
+ "print \"sum(a) = \" , sum_(a) \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "sum(a) = 176\n"
+ ]
+ }
+ ],
+ "prompt_number": 10
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.10, page no. 132"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def read(a):\n",
+ " print \"Enter integers. Terminate with 0:\\n\"\n",
+ " n = 1\n",
+ " while True:\n",
+ " n = int(raw_input(\"a[\" + str(len(a)) + \"]: \"))\n",
+ " if n == 0:\n",
+ " break\n",
+ " a.append(n)\n",
+ " \n",
+ "\n",
+ "def print_(a):\n",
+ " for i in a:\n",
+ " print i ,\n",
+ "\n",
+ "\n",
+ "a = []\n",
+ "read(a)\n",
+ "print \"The array has \" , len(a) , \" elements: \"\n",
+ "print_(a)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Enter integers. Terminate with 0:\n",
+ "\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "a[0]: 11\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "a[1]: 22\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "a[2]: 33\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "a[3]: 44\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "a[4]: 0\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The array has 4 elements: \n",
+ "11 22 33 44\n"
+ ]
+ }
+ ],
+ "prompt_number": 12
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.11, page no. 133"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import sys\n",
+ "a = [ 22, 44, 66, 88 ]\n",
+ "print \"a = \" , id(a) # the address of a[0]\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "a = 169156908\n"
+ ]
+ }
+ ],
+ "prompt_number": 13
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.12, page no. 133"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def index(x,a,n):\n",
+ " for i in range(len(a)):\n",
+ " if (a[i] == x):\n",
+ " return i\n",
+ " return n # x not found\n",
+ "\n",
+ "a = [ 22, 44, 66, 88, 44, 66, 55 ]\n",
+ "print \"index(44,a,7) = \" , index(44,a,7)\n",
+ "print \"index(50,a,7) = \" , index(50,a,7) \n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "index(44,a,7) = 1\n",
+ "index(50,a,7) = 7\n"
+ ]
+ }
+ ],
+ "prompt_number": 14
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.13, page no. 134"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def sort(a,n):\n",
+ " # bubble sort:\n",
+ " n = len(a)\n",
+ " for i in range(n):\n",
+ " # bubble up max{a[0..n-i]}:\n",
+ " for j in range(n-i-1):\n",
+ " if (a[j] > a[j+1]):\n",
+ " a[j],a[j+1] = a[j+1],a[j]\n",
+ "\n",
+ "def print_(a):\n",
+ " for i in range(len(a)):\n",
+ " print a[i],\n",
+ " print ''\n",
+ " \n",
+ "a = [55.5, 22.5, 99.9, 66.6, 44.4, 88.8, 33.3, 77.7]\n",
+ "\n",
+ "print_(a)\n",
+ "sort(a,8)\n",
+ "print_(a)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "55.5 22.5 99.9 66.6 44.4 88.8 33.3 77.7 \n",
+ "22.5 33.3 44.4 55.5 66.6 77.7 88.8 99.9 \n"
+ ]
+ }
+ ],
+ "prompt_number": 15
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.14, page no. 135"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def index(x,a,n):\n",
+ " # PRECONDITION: a[0] <= a[1] <= ... <= a[n-1];\n",
+ " # binary search:\n",
+ " lo=0\n",
+ " hi=n-1\n",
+ " while (lo <= hi):\n",
+ " i = (lo + hi)/2 # the average of lo and hi\n",
+ " if (a[i] == x):\n",
+ " return i\n",
+ " if (a[i] < x):\n",
+ " lo = i+1 # continue search in a[i+1..hi]\n",
+ " else:\n",
+ " hi = i-1 # continue search in a[lo..i-1]\n",
+ " return n # x was not found in a[0..n-1]\n",
+ "\n",
+ "a = [ 22, 33, 44, 55, 66, 77, 88 ]\n",
+ "print \"index(44,a,7) = \" , index(44,a,7)\n",
+ "print \"index(60,a,7) = \" , index(60,a,7) \n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "index(44,a,7) = 2\n",
+ "index(60,a,7) = 7\n"
+ ]
+ }
+ ],
+ "prompt_number": 16
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.15, page no. 136"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def isNondecreasing(a,n):\n",
+ " # returns true iff a[0] <= a[1] <= ... <= a[n-1]:\n",
+ " for i in range(1,n):\n",
+ " if (a[i]<a[i-1]):\n",
+ " return False\n",
+ " return True\n",
+ "\n",
+ "a = [ 22, 44, 66, 88, 44, 66, 55 ]\n",
+ "print \"isNondecreasing(a,4) = \" , isNondecreasing(a,4)\n",
+ "print \"isNondecreasing(a,7) = \" , isNondecreasing(a,7)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "isNondecreasing(a,4) = True\n",
+ "isNondecreasing(a,7) = False\n"
+ ]
+ }
+ ],
+ "prompt_number": 17
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.16, page no. 137"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def isNondecreasing(a,n):\n",
+ " # returns true iff a[0] <= a[1] <= ... <= a[n-1]:\n",
+ " for i in range(1,n):\n",
+ " if (a[i]<a[i-1]):\n",
+ " return False\n",
+ " return True\n",
+ "\n",
+ "\n",
+ "def index(x,a,n):\n",
+ " # PRECONDITION: a[0] <= a[1] <= ... <= a[n-1];\n",
+ " # binary search:\n",
+ " assert(isNondecreasing(a,n)) \n",
+ " \n",
+ " lo=0\n",
+ " hi=n-1\n",
+ " while (lo <= hi):\n",
+ " i = (lo + hi)/2\n",
+ " if (a[i] == x):\n",
+ " return i\n",
+ " if (a[i] < x):\n",
+ " lo = i+1 # continue search in a[i+1..hi]\n",
+ " else:\n",
+ " hi = i-1 # continue search in a[lo..i-1]\n",
+ " return n # x was not found in a[0..n-1]\n",
+ "\n",
+ "a = [ 22, 33, 44, 55, 66, 77, 88, 60 ]\n",
+ "print \"index(44,a,7) = \" , index(44,a,7) \n",
+ "print \"index(44,a,8.py) = \" , index(44,a,8) \n",
+ "print \"index(60,a,7) = \" , index(60,a,8)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "ename": "AssertionError",
+ "evalue": "",
+ "output_type": "pyerr",
+ "traceback": [
+ "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[1;31mAssertionError\u001b[0m Traceback (most recent call last)",
+ "\u001b[1;32m<ipython-input-18-3a784dd6b25e>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m 34\u001b[0m \u001b[0ma\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;33m[\u001b[0m \u001b[1;36m22\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;36m33\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;36m44\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;36m55\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;36m66\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;36m77\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;36m88\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;36m60\u001b[0m \u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 35\u001b[0m \u001b[1;32mprint\u001b[0m \u001b[1;34m\"index(44,a,7) = \"\u001b[0m \u001b[1;33m,\u001b[0m \u001b[0mindex\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;36m44\u001b[0m\u001b[1;33m,\u001b[0m\u001b[0ma\u001b[0m\u001b[1;33m,\u001b[0m\u001b[1;36m7\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m---> 36\u001b[1;33m \u001b[1;32mprint\u001b[0m \u001b[1;34m\"index(44,a,7) = \"\u001b[0m \u001b[1;33m,\u001b[0m \u001b[0mindex\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;36m44\u001b[0m\u001b[1;33m,\u001b[0m\u001b[0ma\u001b[0m\u001b[1;33m,\u001b[0m\u001b[1;36m8\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 37\u001b[0m \u001b[1;32mprint\u001b[0m \u001b[1;34m\"index(60,a,7) = \"\u001b[0m \u001b[1;33m,\u001b[0m \u001b[0mindex\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;36m60\u001b[0m\u001b[1;33m,\u001b[0m\u001b[0ma\u001b[0m\u001b[1;33m,\u001b[0m\u001b[1;36m8\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
+ "\u001b[1;32m<ipython-input-18-3a784dd6b25e>\u001b[0m in \u001b[0;36mindex\u001b[1;34m(x, a, n)\u001b[0m\n\u001b[0;32m 18\u001b[0m \u001b[1;31m# PRECONDITION: a[0] <= a[1] <= ... <= a[n-1];\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 19\u001b[0m \u001b[1;31m# binary search:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m---> 20\u001b[1;33m \u001b[1;32massert\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0misNondecreasing\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0ma\u001b[0m\u001b[1;33m,\u001b[0m\u001b[0mn\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m 21\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m 22\u001b[0m \u001b[0mlo\u001b[0m\u001b[1;33m=\u001b[0m\u001b[1;36m0\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
+ "\u001b[1;31mAssertionError\u001b[0m: "
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "index(44,a,7) = 2\n",
+ "index(44,a,7) = "
+ ]
+ }
+ ],
+ "prompt_number": 18
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.17, page no. 137"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "Day = [ 0, 1, 2, 3, 4, 5, 6 ]\n",
+ "high = [ 88.3, 95.0, 91.2, 89.9, 91.4, 92.5, 86.7]\n",
+ "\n",
+ "for i in Day:\n",
+ " print \"The high temperature for day \" , i , \" was \" , high[i] \n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " The high temperature for day 0 was 88.3\n",
+ "The high temperature for day 1 was 95.0\n",
+ "The high temperature for day 2 was 91.2\n",
+ "The high temperature for day 3 was 89.9\n",
+ "The high temperature for day 4 was 91.4\n",
+ "The high temperature for day 5 was 92.5\n",
+ "The high temperature for day 6 was 86.7\n"
+ ]
+ }
+ ],
+ "prompt_number": 19
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.18, page no. 139"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def sort(a,n):\n",
+ " a.sort()\n",
+ "\n",
+ "def print_(a,n):\n",
+ " for i in a:\n",
+ " print i,\n",
+ " print ''\n",
+ "a = [55.5, 22.5, 99.9, 66.6, 44.4, 88.8, 33.3, 77.7]\n",
+ "print_(a,8);\n",
+ "sort(a,8)\n",
+ "print_(a,8)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "55.5 22.5 99.9 66.6 44.4 88.8 33.3 77.7 \n",
+ "22.5 33.3 44.4 55.5 66.6 77.7 88.8 99.9 \n"
+ ]
+ }
+ ],
+ "prompt_number": 20
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.19, page no. 139"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def read(a):\n",
+ " print \"Enter 15 integers, 5 per row:\\n\"\n",
+ " for i in range(3):\n",
+ " ar = []\n",
+ " print \"Row \" , i , \": \",\n",
+ " for j in range(5):\n",
+ " ar.append(int(raw_input()))\n",
+ " a.append(ar)\n",
+ "\n",
+ "def print_(a):\n",
+ " for i in range(3):\n",
+ " for j in range(5):\n",
+ " print a[i][j],\n",
+ " print ''\n",
+ "a = []\n",
+ "read(a)\n",
+ "print_(a)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Enter 15 integers, 5 per row:\n",
+ "\n",
+ "Row 0 : "
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "44\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "77\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "33\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "11\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "44\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " Row 1 : "
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "60\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "50\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "30\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "90\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "70\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " Row 2 : "
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "85\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "25\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "45\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "45\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "55\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " 44 77 33 11 44 \n",
+ "60 50 30 90 70 \n",
+ "85 25 45 45 55 \n"
+ ]
+ }
+ ],
+ "prompt_number": 21
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.20, page no. 140"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def read(score):\n",
+ " for s in range(3):\n",
+ " print \"Student \" , s , \": \",\n",
+ " st = []\n",
+ " for q in range(5):\n",
+ " st.append(int(raw_input()))\n",
+ " score.append(st)\n",
+ "\n",
+ "def printQuizAverages(score):\n",
+ " for s in range(3):\n",
+ " sm = 0\n",
+ " for q in range(5):\n",
+ " sm += score[s][q]\n",
+ " print \"\\tStudent \" , s , \": \" , sm/5.0\n",
+ "\n",
+ "def printClassAverages(score):\n",
+ " for q in range(5):\n",
+ " sm = 0\n",
+ " for s in range(3):\n",
+ " sm += score[s][q]\n",
+ " print \"\\tQuiz \" , q , \": \" , sm/3.0\n",
+ "\n",
+ "\n",
+ "\n",
+ "NUM_STUDENTS = 3\n",
+ "NUM_QUIZZES = 5\n",
+ "\n",
+ "\n",
+ "score = []\n",
+ "print \"Enter \" , NUM_QUIZZES , \" scores for each student: \"\n",
+ "read(score)\n",
+ "print \"The quiz averages are:\"\n",
+ "printQuizAverages(score)\n",
+ "print \"The class averages are: \"\n",
+ "printClassAverages(score)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Enter 5 scores for each student: \n",
+ "Student 0 : "
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "8\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "7\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "9\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "8\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "9\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " Student 1 : "
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "9\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "9\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "9\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "9\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "8\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " Student 2 : "
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "5\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "6\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "7\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "8\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "9\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " The quiz averages are:\n",
+ "\tStudent 0 : 8.2\n",
+ "\tStudent 1 : 8.8\n",
+ "\tStudent 2 : 7.0\n",
+ "The class averages are: \n",
+ "\tQuiz 0 : 7.33333333333\n",
+ "\tQuiz 1 : 7.33333333333\n",
+ "\tQuiz 2 : 8.33333333333\n",
+ "\tQuiz 3 : 8.33333333333\n",
+ "\tQuiz 4 : 8.66666666667\n"
+ ]
+ }
+ ],
+ "prompt_number": 24
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 6.21, page no. 141"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "def numZeros(a,n1,n2,n3):\n",
+ " count = 0\n",
+ " for i in range(n1):\n",
+ " for j in range(n2):\n",
+ " for k in range(n3):\n",
+ " if (a[i][j][k] == 0):\n",
+ " count += 1\n",
+ " return count\n",
+ "\n",
+ "\n",
+ "a = [ [ [5,0,2], [0,0,9], [4,1,0], [7,7,7] ],[ [3,0,0], [8,5,0], [0,0,0], [2,0,9] ]]\n",
+ "print \"This array has \" , numZeros(a,2,4,3) , \" zeros\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "This array has 11 zeros\n"
+ ]
+ }
+ ],
+ "prompt_number": 25
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
\ No newline at end of file |