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+{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:df255fa9a4e53028d13370030da5fb9293c0b07c60111131baf99b22bd751792"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 7 : Array and Strings"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1, page no. 221"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "sum = 0\n",
+ "a1 = int(raw_input(\"Age:\"))\n",
+ "sum += a1\n",
+ "a2 = int(raw_input(\"Age:\"))\n",
+ "sum += a2\n",
+ "a3 = int(raw_input(\"Age:\"))\n",
+ "sum += a3\n",
+ "a4 = int(raw_input(\"Age:\"))\n",
+ "sum += a4\n",
+ "a5 = int(raw_input(\"Age:\"))\n",
+ "sum += a5\n",
+ "print \"The ages that were input are:\"\n",
+ "print a1\n",
+ "print a2\n",
+ "print a3\n",
+ "print a4\n",
+ "print a5\n",
+ "print \"Average = %d\" %(sum/5)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Age:10\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Age:20\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Age:30\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Age:40\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Age:50\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The ages that were input are:\n",
+ "10\n",
+ "20\n",
+ "30\n",
+ "40\n",
+ "50\n",
+ "Average = 30\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 2, page no. 222"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "sum = 0.0\n",
+ "age = []\n",
+ "n = int(raw_input(\"Number of persons:\"))\n",
+ "if n<=0 or n>5:\n",
+ " print \"Invalid number of person entered\"\n",
+ "else:\n",
+ " for i in range(n):\n",
+ " age.append(int(raw_input(\"Age :\")))\n",
+ " sum += age[i]\n",
+ " print \"The ages input are:\"\n",
+ " for i in range (n):\n",
+ " print age[i]\n",
+ " print \"The average is :\",(sum/n)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Number of persons:5\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Age :10\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Age :20\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Age :30\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Age :40\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Age :50\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The ages input are:\n",
+ "10\n",
+ "20\n",
+ "30\n",
+ "40\n",
+ "50\n",
+ "The average is : 30.0\n"
+ ]
+ }
+ ],
+ "prompt_number": 7
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.1, page no. 225"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "a = []\n",
+ "n = int(raw_input(\"Size of vector ? \"))\n",
+ "print \"Vector elements ? \"\n",
+ "for i in range (n):\n",
+ " a.append(float(raw_input()))\n",
+ "large = max(a)\n",
+ "small = min(a)\n",
+ "print \"Largest element in vector is %8.2f\" %large\n",
+ "print \"Smallest element in vector is %8.2f\" %small"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Size of vector ? 7\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Vector elements ? \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "34.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "-9.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "12.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "10\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "-6.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "0.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "36.00\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Largest element in vector is 36.00\n",
+ "Smallest element in vector is -9.00\n"
+ ]
+ }
+ ],
+ "prompt_number": 18
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.2, page no. 226"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "a = []\n",
+ "n = int(raw_input(\"Size of vector ? \"))\n",
+ "print \"Vector elements ? \"\n",
+ "for i in range (n):\n",
+ " a.append(float(raw_input()))\n",
+ "for i in range (n-1):\n",
+ " for j in range(i+1,n):\n",
+ " if a[i]> a[j]:\n",
+ " a[i],a[j]=a[j],a[i]\n",
+ "print \"Vector elements in ascending order :\"\n",
+ "for i in range(n):\n",
+ " print \"%8.2f\" %a[i]\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Size of vector ? 8\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Vector elements ? \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "91.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "20.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "7.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "34.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "11.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "-2.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "6.00\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Vector elements in ascending order :\n",
+ " -2.00\n",
+ " 1.00\n",
+ " 6.00\n",
+ " 7.00\n",
+ " 11.00\n",
+ " 20.00\n",
+ " 34.00\n",
+ " 91.00\n"
+ ]
+ }
+ ],
+ "prompt_number": 17
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.3, page no. 227"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "a = []\n",
+ "n = int(raw_input(\"Size of vector ? \"))\n",
+ "print \"Vector elements ? \"\n",
+ "for i in range (n):\n",
+ " a.append(float(raw_input()))\n",
+ "item = float(raw_input(\"Element to be inserted ?\"))\n",
+ "pos = int(raw_input(\"Position of insertion ?\"))\n",
+ "a.insert(pos-1, item)\n",
+ "print \"Vector after insertion\"\n",
+ "for ele in a:\n",
+ " print ele,"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Size of vector ? 7\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Vector elements ? \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "4.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "5.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "6.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "7.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Element to be inserted ?10.00\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Position of insertion ?1\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Vector after insertion\n",
+ "10.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0\n"
+ ]
+ }
+ ],
+ "prompt_number": 21
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example arrfunc.c, page no. 230"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "rollno = 4\n",
+ "subject = 3\n",
+ "def display(studentmarks):\n",
+ " for r in range(rollno):\n",
+ " print \"\\nRoll no.: \", r+1,\n",
+ " for s in range(subject):\n",
+ " print \"%10.2f\" %studentmarks[r][s],\n",
+ "marks =[[35.5, 40.5, 45.5],\n",
+ " [50.5, 55.5, 60.5],\n",
+ " [65.0, 70.0, 75.5],\n",
+ " [80.0, 85.0, 90.0]]\n",
+ "display(marks)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\n",
+ "Roll no.: 1 35.50 40.50 45.50 \n",
+ "Roll no.: 2 50.50 55.50 60.50 \n",
+ "Roll no.: 3 65.00 70.00 75.50 \n",
+ "Roll no.: 4 80.00 85.00 90.00\n"
+ ]
+ }
+ ],
+ "prompt_number": 28
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.4, page no. 240"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import numpy\n",
+ "\n",
+ "a = numpy.zeros((10, 10))\n",
+ "b = numpy.zeros((10, 10))\n",
+ "c = numpy.zeros((10, 10))\n",
+ "\n",
+ "print \"Input row & column of A matrix: \"\n",
+ "n = int(raw_input(\"row: \"))\n",
+ "m = int(raw_input(\"column: \"))\n",
+ "\n",
+ "print \"Input row & column of B matrix: \"\n",
+ "p = int(raw_input(\"row: \"))\n",
+ "q = int(raw_input(\"column: \"))\n",
+ "\n",
+ "if n == p and m == q:\n",
+ " print \"Matrices can be added\"\n",
+ " print \"Input A matrix: \",\n",
+ " for i in range(n):\n",
+ " for j in range(m):\n",
+ " a[i][j] = int(raw_input())\n",
+ " print \"\"\n",
+ " print \"Input B matrix: \",\n",
+ " for i in range(p):\n",
+ " for j in range(q):\n",
+ " b[i][j] = int(raw_input())\n",
+ " print \"\"\n",
+ " for i in range(p):\n",
+ " for j in range(q):\n",
+ " c[i][j] = a[i][j] + b[i][j]\n",
+ " print \"Sum of A & B matrices: \"\n",
+ " for i in range(n):\n",
+ " for j in range(m):\n",
+ " print \"%5d\" %c[i][j],\n",
+ " print \"\"\n",
+ "else:\n",
+ " print \"Matricess cannot be added\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Input row & column of A matrix: \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "row: 3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "column: 3\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Input row & column of B matrix: \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "row: 3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "column: 3\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Matrices can be added\n",
+ "Input A matrix: "
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "4\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "5\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "6\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\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": [
+ "\n",
+ "Input B matrix: "
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "4\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "5\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "6\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "\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": [
+ "\n",
+ "Sum of A & B matrices: \n",
+ " 2 4 6 \n",
+ " 8 10 12 \n",
+ " 14 16 18 \n"
+ ]
+ }
+ ],
+ "prompt_number": 46
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.5, page no. 233"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import numpy\n",
+ "\n",
+ "a = numpy.zeros((10, 10))\n",
+ "print \"Enter the order of A matrix: \",\n",
+ "n = int(raw_input())\n",
+ "print \"Input A matrix\"\n",
+ "for i in range(n):\n",
+ " for j in range(n):\n",
+ " a[i][j] = int(raw_input())\n",
+ "trace = 0\n",
+ "for i in range(n):\n",
+ " trace += a[i][i]\n",
+ "print \"Trace = \", trace"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Enter the order of A matrix: "
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " Input A matrix\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "4\n"
+ ]
+ },
+ {
+ "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": [
+ "Trace = 15.0\n"
+ ]
+ }
+ ],
+ "prompt_number": 48
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.6, page no. 233"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import numpy\n",
+ "\n",
+ "def read_mat(a, m, n):\n",
+ " for i in range(m):\n",
+ " for j in range(n):\n",
+ " a[i][j] = int(raw_input())\n",
+ "def write_mat(a, m, n):\n",
+ " for i in range(m):\n",
+ " for j in range(n):\n",
+ " print \"%d\" %a[i][j],\n",
+ " print \"\"\n",
+ "\n",
+ "a = numpy.zeros((10, 10))\n",
+ "b = numpy.zeros((10, 10))\n",
+ "c = numpy.zeros((10, 10))\n",
+ "\n",
+ "print \"Input row & column of A matrix: \"\n",
+ "n = int(raw_input(\"row: \"))\n",
+ "m = int(raw_input(\"column: \"))\n",
+ "\n",
+ "print \"Input row & column of b matrix: \"\n",
+ "k = int(raw_input(\"row: \"))\n",
+ "q = int(raw_input(\"column: \"))\n",
+ "\n",
+ "if n == k:\n",
+ " print \"Matrices can be multiplied\"\n",
+ " print \"Resultant Matrix is %d x %d\" %(m, q)\n",
+ " print \"Input A matrix\"\n",
+ " read_mat(a, m, n)\n",
+ " print \"Input B matrix\"\n",
+ " read_mat(b, k, q)\n",
+ " for i in range(m):\n",
+ " for j in range(q):\n",
+ " c[i][j] = 0\n",
+ " for ip in range(n):\n",
+ " c[i][j] = c[i][j]+a[i][ip]*b[ip][j]\n",
+ " print \"Resultant of A and B matrices: \"\n",
+ " write_mat(c, m, q)\n",
+ "else:\n",
+ " print \"col of matrix A must be equal to row of matrix B\"\n",
+ " print \"Matrices cannot be multiplied\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Input row & column of A matrix: \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "row: 3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "column: 3\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Input row & column of b matrix: \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "row: 3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "column: 3\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Matrices can be multiplied\n",
+ "Resultant Matrix is 3 x 3\n",
+ "Input A matrix\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "4\n"
+ ]
+ },
+ {
+ "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": [
+ "Input B matrix\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "4\n"
+ ]
+ },
+ {
+ "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": [
+ "Resultant of A and B matrices: \n",
+ "30 36 42 \n",
+ "66 81 96 \n",
+ "102 126 150 \n"
+ ]
+ }
+ ],
+ "prompt_number": 51
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.7, page no. 235"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import numpy\n",
+ "\n",
+ "a = numpy.zeros((10, 10))\n",
+ "\n",
+ "print \"Input row & column of A matrix: \"\n",
+ "n = int(raw_input(\"row: \"))\n",
+ "m = int(raw_input(\"column: \"))\n",
+ "\n",
+ "print \"Input A matrix: \"\n",
+ "for i in range(n):\n",
+ " for j in range(m):\n",
+ " a[i][j] = int(raw_input())\n",
+ "print \"Transpose of matrix A is\"\n",
+ "for i in range(m):\n",
+ " for j in range(n):\n",
+ " print \"%5d\" %a[j][i],\n",
+ " print \"\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Input row & column of A matrix: \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "row: 3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "column: 4\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Input A matrix: \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "4\n"
+ ]
+ },
+ {
+ "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"
+ ]
+ },
+ {
+ "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"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Transpose of matrix A is\n",
+ " 1 5 9 \n",
+ " 2 6 6 \n",
+ " 3 7 7 \n",
+ " 4 8 8 \n"
+ ]
+ }
+ ],
+ "prompt_number": 55
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.8, page no. 237"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "strc = \"This is a string literal\"\n",
+ "print strc"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "This is a string literal\n"
+ ]
+ }
+ ],
+ "prompt_number": 57
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example starray.c, page no. 238"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "names = [\"Tejaswi\",\n",
+ " \"Prasad\",\n",
+ " \"Prasanth\",\n",
+ " \"Prakash\",\n",
+ " \"Anand\",]\n",
+ "for name in names:\n",
+ " print name"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Tejaswi\n",
+ "Prasad\n",
+ "Prasanth\n",
+ "Prakash\n",
+ "Anand\n"
+ ]
+ }
+ ],
+ "prompt_number": 59
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example strcat.c, page no. 239"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "oneString = \"Fish\"\n",
+ "twoString = \"face\"\n",
+ "oneString += twoString\n",
+ "print oneString"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Fishface\n"
+ ]
+ }
+ ],
+ "prompt_number": 63
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.9, page no. 241"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "a = []\n",
+ "print \"Size of vector ?\"\n",
+ "n = int(raw_input())\n",
+ "num = n\n",
+ "print \"Vector Elements ?\"\n",
+ "for i in range(n):\n",
+ " a.append(float(raw_input()))\n",
+ "a = set(a)\n",
+ "a = list(a)\n",
+ "length = len(a)\n",
+ "print length\n",
+ "if length == n:\n",
+ " print \"No duplicates found\"\n",
+ "else:\n",
+ " print \"Vector has %d duplicates\" %(num - length)\n",
+ " print \"Vector after deleting duplicates: \",\n",
+ " for ele in a:\n",
+ " print ele,"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Size of vector ?\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "6\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Vector Elements ?\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "4\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "4\n",
+ "Vector has 2 duplicates\n",
+ "Vector after deleting duplicates: 1.0 2.0 3.0 4.0\n"
+ ]
+ }
+ ],
+ "prompt_number": 73
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.10, page no. 242"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import numpy\n",
+ "\n",
+ "grade = ['', '', '', '', '', '', '', '', '', '', '', '', '', '']\n",
+ "a = numpy.zeros((50,10))\n",
+ "print \"Number of students ?\",\n",
+ "n = int(raw_input())\n",
+ "for i in range(n):\n",
+ " sum = 0.0\n",
+ " print \"Enter 3 socres of student %d\" %(i+1)\n",
+ " for j in range(3):\n",
+ " a[i][j] = (float(raw_input()))\n",
+ " sum += a[i][j]\n",
+ " avg = sum/3\n",
+ " a[i][3] = avg\n",
+ " if avg < 30.0:\n",
+ " grade[i] = 'E'\n",
+ " elif avg < 60.0:\n",
+ " grade[i] = 'D'\n",
+ " elif avg < 75.0:\n",
+ " grade[i] = 'B'\n",
+ " else:\n",
+ " grade[i] = 'A'\n",
+ "print \"S1.no scores AVERAGE GRADE\"\n",
+ "print \"---------------------------------------------\"\n",
+ "for i in range(n):\n",
+ " print i+1,\n",
+ " for j in range(4):\n",
+ " print \"%8.2f\" %a[i][j],\n",
+ " print \"%6c\" %grade[i],\n",
+ " print \"\"\n",
+ " print \"---------------------------------------------\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Number of students ?"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "5\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " Enter 3 socres of student 1\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "67\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "86\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "58\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Enter 3 socres of student 2\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "20\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "30\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "23.9\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Enter 3 socres of student 3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "80\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "97\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "73\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Enter 3 socres of student 4\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "56.8\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "47.9\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "62.0\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Enter 3 socres of student 5\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "45\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "35\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "40\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "S1.no scores AVERAGE GRADE\n",
+ "---------------------------------------------\n",
+ "1 67.00 86.00 58.00 70.33 B \n",
+ "---------------------------------------------\n",
+ "2 20.00 30.00 23.90 24.63 E \n",
+ "---------------------------------------------\n",
+ "3 80.00 97.00 73.00 83.33 A \n",
+ "---------------------------------------------\n",
+ "4 56.80 47.90 62.00 55.57 D \n",
+ "---------------------------------------------\n",
+ "5 45.00 35.00 40.00 40.00 D \n",
+ "---------------------------------------------\n"
+ ]
+ }
+ ],
+ "prompt_number": 85
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.11, page no. 243"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "sumsq = 0\n",
+ "sum = 0\n",
+ "print \"Calculation standard deviation of a\"\n",
+ "print \"Enter size of the list: \",\n",
+ "n = int(raw_input())\n",
+ "x = []\n",
+ "print \"Enter the %d items \" %n\n",
+ "for i in range(n):\n",
+ " x.append(float(raw_input()))\n",
+ " sum += x[i]\n",
+ "mean = sum/n\n",
+ "for i in range(n):\n",
+ " sumsq = sumsq + (mean-x[i]) * (mean-x[i])\n",
+ "variance = sumsq/n\n",
+ "sdn = math.sqrt(variance)\n",
+ "print \"Mean of %5d items : %10.6f\" %(n, mean)\n",
+ "print \"Variance : %10.6f\" %(variance)\n",
+ "print \"Standard Deviation : %10.6f\" %sdn"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Calculation standard deviation of a\n",
+ "Enter size of the list: "
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "7\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " Enter the 7 items \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "32\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "11\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "90\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "34\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "52\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "24\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "7\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Mean of 7 items : 35.714286\n",
+ "Variance : 685.918367\n",
+ "Standard Deviation : 26.190043\n"
+ ]
+ }
+ ],
+ "prompt_number": 89
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.12, page no. 244"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import numpy\n",
+ "import math\n",
+ "\n",
+ "def nrm(a, n, m):\n",
+ " sum = 0.0\n",
+ " for i in range(n):\n",
+ " for j in range(m):\n",
+ " sum = sum + a[i][j] * a[i][j]\n",
+ " print \"Sum = %6.2f\" %sum\n",
+ " return math.sqrt(sum)\n",
+ "\n",
+ "a = numpy.zeros((10, 10))\n",
+ "print \"Input row & column of A matrix\"\n",
+ "n = int(raw_input(\"row: \"))\n",
+ "m = int(raw_input(\"column: \"))\n",
+ "print \"Input A matrix\"\n",
+ "for i in range(n):\n",
+ " for j in range(m):\n",
+ " a[i][j] = float(raw_input())\n",
+ "norm = nrm(a, n, m)\n",
+ "print \"Norm = %6.2f\" %norm"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Input row & column of A matrix\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "row: 3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "column: 3\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Input A matrix\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "4\n"
+ ]
+ },
+ {
+ "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": [
+ "Sum = 285.00\n",
+ "Norm = 16.88\n"
+ ]
+ }
+ ],
+ "prompt_number": 90
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.13, page no. 245"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import numpy\n",
+ "\n",
+ "a = numpy.zeros((5, 5))\n",
+ "flag = True\n",
+ "print \"Input size of matrix\"\n",
+ "n = int(raw_input(\"row: \"))\n",
+ "m = int(raw_input(\"column: \"))\n",
+ "print \"Enter the elements of the matrix: \"\n",
+ "for i in range(m):\n",
+ " for j in range(n):\n",
+ " a[i][j] = float(raw_input())\n",
+ "for i in range(m):\n",
+ " min = a[i][0]\n",
+ " p = i\n",
+ " q = 0\n",
+ " for j in range(n):\n",
+ " if min > a[i][j]:\n",
+ " min = a[i][j]\n",
+ " p = i\n",
+ " q = j\n",
+ " for j in range(m):\n",
+ " if j != q:\n",
+ " if a[j][q] > a[p][q]:\n",
+ " flag = False\n",
+ " if flag:\n",
+ " print \"Saddle point a[%d][%d] = %d\" %(p+1, q+1, a[p][q])\n",
+ " else:\n",
+ " print \"No saddle is in row %d\" %(i+1)\n",
+ " flag = True"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Input size of matrix\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "row: 3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "column: 3\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Enter the elements of the matrix: \n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "7\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "5\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "5\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "10\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "5\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "8\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "6\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Saddle point a[1][2] = 5\n",
+ "Saddle point a[2][2] = 5\n",
+ "No saddle is in row 3\n"
+ ]
+ }
+ ],
+ "prompt_number": 91
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.14, page no. 246"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import numpy\n",
+ "\n",
+ "a = numpy.zeros((10, 10))\n",
+ "b = numpy.zeros((10, 10))\n",
+ "flag = None\n",
+ "print \"Input order of A matrix\"\n",
+ "n = int(raw_input(\"row: \"))\n",
+ "print \"Input A matrix\"\n",
+ "for i in range(n):\n",
+ " for j in range(n):\n",
+ " a[i][j] = int(raw_input())\n",
+ "for i in range(n):\n",
+ " for j in range(n):\n",
+ " b[i][j] = a[j][i]\n",
+ "print \"Transpose of A matrix\"\n",
+ "for i in range(n):\n",
+ " for j in range(n):\n",
+ " print \"%5d\" %b[i][j],\n",
+ " print \"\"\n",
+ "for i in range(n):\n",
+ " for j in range(n):\n",
+ " if a[i][j] != b[i][j]:\n",
+ " flag = True\n",
+ "if flag:\n",
+ " print \"Matrix is not symmetric\"\n",
+ "else:\n",
+ " print \"Matrix is symmetric\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Input order of A matrix\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "row: 2\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Input A matrix\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "1\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "2\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "3\n"
+ ]
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "4\n"
+ ]
+ },
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Transpose of A matrix\n",
+ " 1 3 \n",
+ " 2 4 \n",
+ "Matrix is not symmetric\n"
+ ]
+ }
+ ],
+ "prompt_number": 96
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+} \ No newline at end of file
generated by cgit (git 2.34.1) at 2024-12-21 13:07:23 +0000