{
"metadata": {
"name": "",
"signature": "sha256:8b48219cd7d973f69d80d4d491de4bdba5cb9c73135095697b1625a862f6bc97"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 05 : Defining and Processing of Arrays"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example: 1, Page Number: 5.5"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Program to read 5 data items from input and store them in an array and display their sum\n",
"\n",
"#Local definitions\n",
"a = []\n",
"sum = 0\n",
"\n",
"for i in range(0,5):\n",
" a.append(0)\n",
"print \"Enter 5 integer numbers\" \n",
"for i in range(0,5):\n",
" a[i] = eval(raw_input())\n",
" \n",
"for i in range(0,5): \n",
" sum = sum + a[i] \n",
" \n",
"print \"The sum of given numbers is : %d\\n\" %sum"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter 5 integer numbers\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"120\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"45\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"69\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"390\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"45\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The sum of given numbers is : 669\n",
"\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example: 2 Page No. 5.7"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Program to accept 5 numbers and print whether the number is even or not\n",
"\n",
"#Local Variable\n",
"a=[]\n",
"\n",
"for i in range(5):\n",
" a.append(0)\n",
"for i in range(0,5):\n",
" i+1\n",
" a[i]=eval(raw_input(\"Enter the %d number: \"%(i+1))) \n",
" print \"\\n\"\n",
"for i in range (0,5):\n",
" if a[i]%2==0:\n",
" print \"%d Number is Even\"%a[i]\n",
" else:\n",
" print \"%d Number is Odd\"%a[i]"
],
"language": "python",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the 1 number: 17\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the 2 number: 38\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the 3 number: 79\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the 4 number: 80\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the 5 number: 76\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"\n",
"17 Number is Odd\n",
"38 Number is Even\n",
"79 Number is Odd\n",
"80 Number is Even\n",
"76 Number is Even\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example: 3 Page No. 5.8"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Program to illustrate how a character array can be used.\n",
"\n",
"#Local definition\n",
"word=['F', 'R', 'I', 'E', 'N', 'D', 'S']\n",
"\n",
"for i in range(0,7):\n",
" word.append(0)\n",
"for i in range(0,7):\n",
" print word[i],"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"F R I E N D S\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example: 4, Page Number: 5.8"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Program to sort the given strings alphabetically\n",
"\n",
"b = raw_input(\"Enter the text to sort : \")\n",
"print \"Sorted Text are : \",''.join(sorted(b, key=lambda v: (v.upper(), v[0].islower())))\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the text to sort : VRBPublishers\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Sorted Text are : BbehilPRrssuV\n"
]
}
],
"prompt_number": 5
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example: 5, Page Number: 5.10"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Program using two dimension array\n",
"\n",
"#Local definition \n",
"stud = [[0 for i in xrange(0,4)] for i in xrange(0,4)] #stud is a array name with 4 rows and 2 columns\n",
"\n",
"for i in range(0,4):\n",
" print \"Enter the %d Student roll no and Mark:\" %i\n",
" stud[i][1], stud[i][2] = input()\n",
" \n",
"for i in range(0,4):\n",
" print \"%d Student roll no %d mark %d\" %(i, stud[i][1], stud[i][2])"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the 0 Student roll no and Mark:\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"3977,80\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the 1 Student roll no and Mark:\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"17776,95\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the 2 Student roll no and Mark:\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"6682,82\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the 3 Student roll no and Mark:\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"6683,85\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"0 Student roll no 3977 mark 80\n",
"1 Student roll no 17776 mark 95\n",
"2 Student roll no 6682 mark 82\n",
"3 Student roll no 6683 mark 85\n"
]
}
],
"prompt_number": 6
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example: 6, Page Number: 5.12"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Program to illustrate Matrix Multiplication\n",
"\n",
"a = [[0 for i in xrange(0,5)] for i in xrange(0,5)]\n",
"b = [[0 for i in xrange(0,5)] for i in xrange(0,5)]\n",
"c = [[0 for i in xrange(0,5)] for i in xrange(0,5)]\n",
"\n",
"while True:\n",
" r1, c1 = input(\"Enter the size of the matrix A....\")\n",
" r2, c2 = input(\"Enter the size of the matrix B....\")\n",
" if c1 == r2:\n",
" print \"Enter matrix A elements...\"\n",
" for i in range (0,r1):\n",
" for j in range (0,c1):\n",
" a[i][j] = input()\n",
" \n",
" print \"Enter matrix B elements...\"\n",
" for i in range (0,r2):\n",
" for j in range (0,c2):\n",
" b[i][j] = input()\n",
" \n",
" for i in range(0,r1):\n",
" for j in range(0,c1):\n",
" c[i][j] = 0\n",
" for k in range(0,c1):\n",
" c[i][j] += a[i][k] * b[k][j]\n",
" \n",
" print \"The resultant matrix is....\"\n",
" for i in range(0,r1):\n",
" for j in range(0,c1):\n",
" print \"%d\\t\" %c[i][j],\n",
" print \"\\n\"\n",
" break \n",
" else:\n",
" print \"Multiplication is not possible\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the size of the matrix A....3,3\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the size of the matrix B....2,2\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Multiplication is not possible\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the size of the matrix A....3,3\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter the size of the matrix B....3,3\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter matrix A elements...\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"2\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter matrix B elements...\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"3\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"3\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"3\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"3\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"3\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"3\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"3\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": [
"The resultant matrix is....\n",
"18\t18\t18\t\n",
"\n",
"18\t18\t18\t\n",
"\n",
"18\t18\t18\t\n",
"\n"
]
}
],
"prompt_number": 7
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example: 7, Page Number: 5.13"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Program to print two dimensional array by row by row\n",
"\n",
"arr = [[0 for i in xrange(0,4)] for i in xrange(0,4)]\n",
"\n",
"for i in range(0,3):\n",
" for j in range(0,4):\n",
" arr[i][j] = (i * 4) + j + 1\n",
" \n",
" \n",
"print \"Printing array contents :\"\n",
"for i in range(0,3):\n",
" for j in range(0,4):\n",
" print \"%3d\" %arr[i][j],\n",
" print \"\\n\" "
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Printing array contents :\n",
" 1 2 3 4 \n",
"\n",
" 5 6 7 8 \n",
"\n",
" 9 10 11 12 \n",
"\n"
]
}
],
"prompt_number": 8
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example: 8, Page Number: 5.14"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Program to add and display the results of 5 nos\n",
"\n",
"#Function definition \n",
"def add(x,ar):\n",
" sum = 0\n",
" for i in range(0,5):\n",
" sum += ar[i]\n",
" print \"Sum is ... %d\" %sum \n",
" \n",
"a = []\n",
"n = 5\n",
"for i in range(0,5):\n",
" a.append(0)\n",
"print \"Enter 5 values\"\n",
"for i in range(0,5):\n",
" a[i] = input()\n",
"add(n,a) #function call"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Enter 5 values\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"10\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": [
"40\n"
]
},
{
"name": "stdout",
"output_type": "stream",
"stream": "stdout",
"text": [
"50\n"
]
},
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Sum is ... 150\n"
]
}
],
"prompt_number": 9
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example: 9, Page Number: 5.15"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Program for capture and store n values into array and print them\n",
"\n",
"#Function definition \n",
"def arr(a = []):\n",
" for i in range(0,5):\n",
" print \"Value in array %d\\n\" %a[i]\n",
" \n",
"a = []\n",
"for i in range(0,5):\n",
" a.append(0)\n",
"for i in range(0,5):\n",
" a[i] = i\n",
"arr(a) #Function call"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Value in array 0\n",
"\n",
"Value in array 1\n",
"\n",
"Value in array 2\n",
"\n",
"Value in array 3\n",
"\n",
"Value in array 4\n",
"\n"
]
}
],
"prompt_number": 10
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example: 10, Page Number: 5.16"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Program to print the character string from the array\n",
"\n",
"name = \"LAK\"\n",
"print \"%s\" %name"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"LAK\n"
]
}
],
"prompt_number": 11
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example: 11, Page Number: 5.17"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Program for explaining the working of 4 dimensional array\n",
"\n",
"#Local definition\n",
"array_4d = [[[[0 for i in xrange(0,3)] for i in xrange(0,3)]for i in xrange(0,3)] for i in xrange(0,3)]\n",
"\n",
"#looping statements \n",
"for a in range(0,3):\n",
" for b in range(0,3):\n",
" for c in range(0,3):\n",
" for d in range(0,3):\n",
" array_4d[a][b][c][d] = a + b + c + d\n",
"#Result \n",
"for a in range(0,3) :\n",
" print \"\\n\"\n",
" for b in range(0,3):\n",
" for c in range(0,3):\n",
" for d in range(0,3):\n",
" print \"%3d\" %array_4d[a][b][c][d],\n",
" print \"\\n\" "
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"\n",
" 0 1 2 \n",
"\n",
" 1 2 3 \n",
"\n",
" 2 3 4 \n",
"\n",
" 1 2 3 \n",
"\n",
" 2 3 4 \n",
"\n",
" 3 4 5 \n",
"\n",
" 2 3 4 \n",
"\n",
" 3 4 5 \n",
"\n",
" 4 5 6 \n",
"\n",
"\n",
"\n",
" 1 2 3 \n",
"\n",
" 2 3 4 \n",
"\n",
" 3 4 5 \n",
"\n",
" 2 3 4 \n",
"\n",
" 3 4 5 \n",
"\n",
" 4 5 6 \n",
"\n",
" 3 4 5 \n",
"\n",
" 4 5 6 \n",
"\n",
" 5 6 7 \n",
"\n",
"\n",
"\n",
" 2 3 4 \n",
"\n",
" 3 4 5 \n",
"\n",
" 4 5 6 \n",
"\n",
" 3 4 5 \n",
"\n",
" 4 5 6 \n",
"\n",
" 5 6 7 \n",
"\n",
" 4 5 6 \n",
"\n",
" 5 6 7 \n",
"\n",
" 6 7 8 \n",
"\n"
]
}
],
"prompt_number": 12
}
],
"metadata": {}
}
]
}