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diff --git a/Schaum's_Outlines:_Programming_with_C++/ch4.ipynb b/Schaum's_Outlines:_Programming_with_C++/ch4.ipynb new file mode 100644 index 00000000..35a47817 --- /dev/null +++ b/Schaum's_Outlines:_Programming_with_C++/ch4.ipynb @@ -0,0 +1,1633 @@ +{ + "metadata": { + "name": "" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 4: Iteration" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.1, page no. 60" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "i=1\n", + "print \"Enter a positive integer: \"\n", + "n = int(raw_input())\n", + "s=0\n", + "while (i <= n):\n", + " s += i\n", + " i += 1\n", + "print \"The sum of the first %d integers is %d\" %(i,s)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "5\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The sum of the first 6 integers is 15\n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.2, page no. 61" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "print \"Enter a positive integer: \"\n", + "bound = int(raw_input())\n", + "s=0.0\n", + "i=0\n", + "while (s < bound):\n", + " i += 1\n", + " s += 1.0/i\n", + "\n", + "print \"The sum of the first %d reciprocals is %f\" %(i,s)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "5\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The sum of the first 83 reciprocals is 5.002068\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.3, page no. 61" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "print \"Enter a positive number: \"\n", + "x = float(raw_input())\n", + "while (x > 0):\n", + " print \"sqrt(%d) = %f \"%(x,math.sqrt(x))\n", + " print \"Enter another positive number (or 0 to quit): \"\n", + " x = float(raw_input())\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive number: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "5\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "sqrt(5) = 2.236068 \n", + "Enter another positive number (or 0 to quit): \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "3\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "sqrt(3) = 1.732051 \n", + "Enter another positive number (or 0 to quit): \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "0\n" + ] + } + ], + "prompt_number": 3 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.4, page no. 62" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "i=1\n", + "print \"Enter a positive integer: \";\n", + "n = int(raw_input())\n", + "s=0\n", + "while(True):\n", + " if (i > n):\n", + " break # terminates the loop immediately\n", + " s += i\n", + " i += 1\n", + "print \"The sum of the first %d integers is %d\" %(n,s)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "5\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The sum of the first 5 integers is 15\n" + ] + } + ], + "prompt_number": 5 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.5, page no. 62\n" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "print \"Enter a positive integer: \"\n", + "bound = int(raw_input())\n", + "print \"Fibonacci numbers < %d:\\n0, 1\" % bound ,\n", + "f0=0\n", + "f1=1\n", + "while (True):\n", + " f2 = f0 + f1\n", + " if (f2 > bound):\n", + " break\n", + " print \", %d\" % f2,\n", + " f0 = f1\n", + " f1 = f2\n", + " " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "10\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Fibonacci numbers < 10:\n", + "0, 1 , 1 , 2 , 3 , 5 , 8\n" + ] + } + ], + "prompt_number": 6 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.6, page no. 63" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import sys\n", + "print \"Enter a positive integer: \"\n", + "bound = int(raw_input())\n", + "print \"Fibonacci numbers < %d:\\n0, 1\" % bound ,\n", + "f0=0\n", + "f1=1\n", + "while (True):\n", + " f2 = f0 + f1\n", + " if (f2 > bound):\n", + " sys.exit(0)\n", + " print \", %d\" % f2,\n", + " f0 = f1\n", + " f1 = f2\n", + " " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "10\n" + ] + }, + { + "ename": "SystemExit", + "evalue": "0", + "output_type": "pyerr", + "traceback": [ + "An exception has occurred, use %tb to see the full traceback.\n", + "\u001b[0;31mSystemExit\u001b[0m\u001b[0;31m:\u001b[0m 0\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Fibonacci numbers < 10:\n", + "0, 1 , 1 , 2 , 3 , 5 , 8" + ] + }, + { + "output_type": "stream", + "stream": "stderr", + "text": [ + "To exit: use 'exit', 'quit', or Ctrl-D.\n" + ] + } + ], + "prompt_number": 6 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.7, page no. 63" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "print \"Enter a positive integer: \"\n", + "bound = int(raw_input())\n", + "print \"Fibonacci numbers < %d:\\n0, 1\" % bound ,\n", + "f0=0\n", + "f1=1\n", + "# Error : infinite loop !\n", + "while (True):\n", + " f2 = f0 + f1\n", + " # By commenting the below if statement, it goes to infinite.\n", + " if (f2 > bound):\n", + " break\n", + " print \", %d\" % f2,\n", + " f0 = f1\n", + " f1 = f2" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n", + "Fibonacci numbers < 10:\n", + "0, 1 , 1 , 2 , 3 , 5 , 8\n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.8, page no. 64" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "i=0\n", + "print \"Enter a positive integer: \"\n", + "n = int(raw_input())\n", + "s=0\n", + "while i<=n:\n", + " s += i\n", + " i += 1\n", + "print \"The sum of the first %d integers is %d\" %(n,s)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "10\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The sum of the first 10 integers is 55\n" + ] + } + ], + "prompt_number": 3 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.9, page no. 65" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "print \"Enter a positive integer: \"\n", + "bound = int(raw_input())\n", + "print \"Factorial numbers < %d:\\n1, 1\" %bound,\n", + "f=1\n", + "i=1\n", + "while f < bound:\n", + " i += 1\n", + " f *= i\n", + " print \", %d\" %f,\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "10\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Factorial numbers < 10:\n", + "1, 1 , 2 , 6 , 24\n" + ] + } + ], + "prompt_number": 4 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.10, page no. 66" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "print \"Enter a positive integer: \"\n", + "n = int(raw_input())\n", + "s=0;\n", + "for i in range(0,n+1):\n", + " s += i\n", + "print \"The sum of the first %d integers is %d\" %(n,s)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "10\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The sum of the first 10 integers is 55\n" + ] + } + ], + "prompt_number": 5 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.11, page no. 66" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "print \"Enter a positive integer: \"\n", + "n = int(raw_input())\n", + "s=0\n", + "for i in range(1,n/2): # the scope of this i is this loop\n", + " s += i\n", + "\n", + "for i in range(n/2,n+1): # the scope of this i is this loop\n", + " s += i\n", + "print \"The sum of the first %d integers is %d\" % (n,s)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "10\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The sum of the first 10 integers is 55\n" + ] + } + ], + "prompt_number": 6 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.12, page no. 66" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "print \"Enter a positive integer: \"\n", + "bound = int(raw_input())\n", + "\n", + "print \"Factorial numbers that are <= %d:\\n1, 1\" %bound,\n", + "f=1\n", + "for i in range(2,bound+1):\n", + " f *= i\n", + " print \", %d\" % f,\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "10\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Factorial numbers that are <= 10:\n", + "1, 1 , 2 , 6 , 24 , 120 , 720 , 5040 , 40320 , 362880 , 3628800\n" + ] + } + ], + "prompt_number": 7 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.13, page no. 67" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "\n", + "for i in range(10,0,-1):\n", + " print i,\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "10 9 8 7 6 5 4 3 2 1\n" + ] + } + ], + "prompt_number": 8 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.14, page no. 67" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "prime = True\n", + "print \"Enter a positive integer: \"\n", + "n = int(raw_input())\n", + "if (n < 2):\n", + " print \"%d is not prime.\" %n\n", + " prime = False\n", + "elif (n < 4):\n", + " print \"%d is prime.\" %n\n", + " prime = False\n", + "elif (n%2 == 0):\n", + " print \"%d = 2* %d\" %(n,n/2)\n", + " prime = False\n", + "else:\n", + " for d in range(3,n/2+1):\n", + " if (n%d == 0):\n", + " print \"%d = %d * %d\" %(n,d,n/d)\n", + " prime = False\n", + "if prime: \n", + " print \"%d is prime.\"%n\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "11\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "11 is prime.\n" + ] + } + ], + "prompt_number": 9 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.15, page no. 68" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "print \"Enter positive integers (0 to quit): \";\n", + "n = int(raw_input())\n", + "m = n\n", + "while n > 0:\n", + " n = int(raw_input())\n", + " if n > m :\n", + " m = n\n", + "\n", + "print \"max = %d\" % m" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter positive integers (0 to quit): \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "5\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "19\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "42\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "1\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "0\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "max = 42\n" + ] + } + ], + "prompt_number": 10 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.16, page no. 68" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "print \"Enter positive integers (0 to quit): \";\n", + "n = int(raw_input())\n", + "m = n\n", + "while n > 0: \n", + " if n < m :\n", + " m = n\n", + " n = int(raw_input())\n", + "\n", + "print \"min = %d\" % m\n", + "\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter positive integers (0 to quit): \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "5\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "19\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "42\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "1\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "0\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "min = 1\n" + ] + } + ], + "prompt_number": 11 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.17, page no. 69" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "m = 95\n", + "n = 11\n", + "while m%n > 0:\n", + " print \"%d modulo %d = %d\" %(m,n,m%n)\n", + " m -= 3\n", + " n += 1\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "95 modulo 11 = 7\n", + "92 modulo 12 = 8\n", + "89 modulo 13 = 11\n", + "86 modulo 14 = 2\n", + "83 modulo 15 = 8\n" + ] + } + ], + "prompt_number": 12 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.18, page no. 69" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "for x in range(1,13):\n", + " for y in range(1,13):\n", + " print \"%4d\" % (x*y),\n", + " print \"\"\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " 1 2 3 4 5 6 7 8 9 10 11 12 \n", + " 2 4 6 8 10 12 14 16 18 20 22 24 \n", + " 3 6 9 12 15 18 21 24 27 30 33 36 \n", + " 4 8 12 16 20 24 28 32 36 40 44 48 \n", + " 5 10 15 20 25 30 35 40 45 50 55 60 \n", + " 6 12 18 24 30 36 42 48 54 60 66 72 \n", + " 7 14 21 28 35 42 49 56 63 70 77 84 \n", + " 8 16 24 32 40 48 56 64 72 80 88 96 \n", + " 9 18 27 36 45 54 63 72 81 90 99 108 \n", + " 10 20 30 40 50 60 70 80 90 100 110 120 \n", + " 11 22 33 44 55 66 77 88 99 110 121 132 \n", + " 12 24 36 48 60 72 84 96 108 120 132 144 \n" + ] + } + ], + "prompt_number": 13 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.19, page no. 70" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "# defines pow() and log()\n", + "\n", + "print \"Enter a positive integer: \"\n", + "n = int(raw_input())\n", + "d=0 # the discrete binary logarithm of n\n", + "p2d=1 # = 2^d\n", + "i = n\n", + "while i > 1:\n", + " # INVARIANT: 2^d <= n/i < 2*2^d\n", + " p2d=math.pow(2,d) # = 2^d\n", + " print \"%2d <= %2d\" %(p2d,2*p2d)\n", + " i /= 2\n", + " d += 1\n", + "\n", + "p2d=math.pow(2,d) # = 2^d\n", + "print \"%2d <= %2d < %2d\" %(p2d,n,2*p2d)\n", + "print \" The discrete binary logarithm of is %d\" % d \n", + "lgn = math.log(n)/math.log(2) # base 2 logarithm\n", + "print \"The continuous binary logarithm of is %f\" % lgn" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "17\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " 1 <= 2\n", + " 2 <= 4\n", + " 4 <= 8\n", + " 8 <= 16\n", + "16 <= 17 < 32\n", + " The discrete binary logarithm of is 4\n", + "The continuous binary logarithm of is 4.087463\n" + ] + } + ], + "prompt_number": 14 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.20, page no. 71" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "i=1\n", + "print \"Enter a positive integer: \"\n", + "n = int(raw_input())\n", + "s=0\n", + "while (True):\n", + " if (i > n):\n", + " break\n", + " s += i\n", + " i += 1\n", + "\n", + "print \"The sum of the first %d integers is %d\" %(i,s)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter a positive integer: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "10\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The sum of the first 11 integers is 55\n" + ] + } + ], + "prompt_number": 15 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.21, page no. 71" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "count=0\n", + "s=0\n", + "print \"Enter positive integers (0 to quit):\" \n", + "while True: # \"forever\"\n", + " print \"\\t %d :\" %(count + 1),\n", + " n = int(raw_input())\n", + " if (n <= 0):\n", + " break\n", + " count += 1\n", + " s += n\n", + "\n", + "print \"The average of those %d positive numbers is \" %count,\n", + "print float(s)/count\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter positive integers (0 to quit):\n", + "\t 1 :" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "12\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " \t 2 :" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "32\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " \t 3 :" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "11\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " \t 4 :" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "0\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " The average of those 3 positive numbers is 18.3333333333\n" + ] + } + ], + "prompt_number": 16 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.22, page no. 72" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "for x in range(1,13):\n", + " for y in range(1,13):\n", + " if y>x:\n", + " break\n", + " else:\n", + " print '%4d' %(x*y),\n", + " print ''\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " 1 \n", + " 2 4 \n", + " 3 6 9 \n", + " 4 8 12 16 \n", + " 5 10 15 20 25 \n", + " 6 12 18 24 30 36 \n", + " 7 14 21 28 35 42 49 \n", + " 8 16 24 32 40 48 56 64 \n", + " 9 18 27 36 45 54 63 72 81 \n", + " 10 20 30 40 50 60 70 80 90 100 \n", + " 11 22 33 44 55 66 77 88 99 110 121 \n", + " 12 24 36 48 60 72 84 96 108 120 132 144 \n" + ] + } + ], + "prompt_number": 17 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.23, page no. 73" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "while True:\n", + " n = int(raw_input('Enter int : '))\n", + " if (n%2 == 0):\n", + " continue\n", + " if (n%3 == 0):\n", + " break\n", + " print \"\\tBottom of loop.\\n\"\n", + "print \"\\tOutside of loop.\\n\"\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter int : 5\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\tBottom of loop.\n", + "\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter int : 4\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter int : 6\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter int : 9\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\tOutside of loop.\n", + "\n" + ] + } + ], + "prompt_number": 18 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.24, page no. 74" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "N=5\n", + "done=False\n", + "for i in range(N):\n", + " for j in range(N):\n", + " if done:\n", + " break\n", + " for k in range(N):\n", + " if done:\n", + " break\n", + " if (i+j+k>N):\n", + " done = True\n", + " else:\n", + " print i+j+k,\n", + " print \" \",\n", + " print \"* \"\n", + " print \".\" \n", + " done = False\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "0 1 2 3 4 * \n", + "1 2 3 4 5 * \n", + "2 3 4 5 * \n", + ".\n", + "1 2 3 4 5 * \n", + "2 3 4 5 * \n", + ".\n", + "2 3 4 5 * \n", + ".\n", + "3 4 5 * \n", + ".\n", + "4 5 * \n", + ".\n" + ] + } + ], + "prompt_number": 19 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.25, page no. 75" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "N=5\n", + "done=False\n", + "for i in range(N):\n", + " for j in range(N):\n", + " if done:\n", + " break\n", + " for k in range(N):\n", + " if done:\n", + " break\n", + " if (i+j+k>N):\n", + " done = True\n", + " else:\n", + " print i+j+k,\n", + " print \" \",\n", + " print \"* \"\n", + " print \".\" \n", + " done = False\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "0 1 2 3 4 * \n", + "1 2 3 4 5 * \n", + "2 3 4 5 * \n", + ".\n", + "1 2 3 4 5 * \n", + "2 3 4 5 * \n", + ".\n", + "2 3 4 5 * \n", + ".\n", + "3 4 5 * \n", + ".\n", + "4 5 * \n", + ".\n" + ] + } + ], + "prompt_number": 20 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.26, page no. 76" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import random\n", + "\n", + "# prints pseudo-random numbers:\n", + "\n", + "for i in range(0,8):\n", + " print random.random()\n", + "\n", + " " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "0.702115758628\n", + "0.969460447904\n", + "0.409934401112\n", + "0.700339443791\n", + "0.093528851602\n", + "0.132172955687\n", + "0.0162887279366\n", + "0.943010713478\n" + ] + } + ], + "prompt_number": 21 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.27, page no. 77" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import random\n", + "# prints pseudo-random numbers:\n", + "print \"Enter seed: \"\n", + "seed = int(raw_input())\n", + "random.seed(seed);\n", + "for i in range(0,8):\n", + " print random.random()\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter seed: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "5\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "0.62290169489\n", + "0.741786989261\n", + "0.795193565566\n", + "0.942450283777\n", + "0.73989857474\n", + "0.922324996665\n", + "0.0290052282836\n", + "0.465622654378\n" + ] + } + ], + "prompt_number": 22 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.28, page no. 78" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import random\n", + "for i in range(0,8):\n", + " print random.random()\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "0.943356716998\n", + "0.648974553137\n", + "0.900900491751\n", + "0.113205964653\n", + "0.469069047782\n", + "0.24657283262\n", + "0.543760859236\n", + "0.573941187928\n" + ] + } + ], + "prompt_number": 23 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.29, page no. 79" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import random\n", + "print \"Enter minimum and maximum: \"\n", + "m = int(raw_input())\n", + "n = int(raw_input())\n", + "# lowest and highest numbers\n", + "r = n - m + 1\n", + "# number of numbers in range\n", + "for i in range(0,20):\n", + " j = int(random.random()*100 % r + m)\n", + " print j,\n", + " print \" \",\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Enter minimum and maximum: \n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "5\n" + ] + }, + { + "name": "stdout", + "output_type": "stream", + "stream": "stdout", + "text": [ + "15\n" + ] + }, + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "6 15 10 8 15 9 7 7 11 6 5 15 14 15 15 15 11 13 14 6 \n" + ] + } + ], + "prompt_number": 24 + } + ], + "metadata": {} + } + ] +}
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