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+{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:3323f7a9a077b84fffdd30478d4b0d0b7f4032b86670a58b5b333d42bee04f15"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h1>Chapter 10: Strings<h1> "
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.3, Page Number: 10.3<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "st='Programming'\n",
+ "print 'The string is %s' %st"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The string is Programming\n"
+ ]
+ }
+ ],
+ "prompt_number": 4
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.4, Page Number: 10.4<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "st='Hello World'\n",
+ "print 'The line is :'\n",
+ "print st"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The line is :\n",
+ "Hello World\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.6, Page Number: 10.5<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "\n",
+ "strin='Welcome to python'\n",
+ "for i in strin:\n",
+ " print i,"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "W e l c o m e t o p y t h o n\n"
+ ]
+ }
+ ],
+ "prompt_number": 6
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.7, Page Number: 10.6<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "\n",
+ "str1='Programming'\n",
+ "len1=len(str1)\n",
+ "print 'The length of the string is ',len1\n",
+ "\n",
+ "str2=str1\n",
+ "print 'First string is %s and copied string is %s' %(str1,str2)\n",
+ "\n",
+ "str3='Computer'\n",
+ "\n",
+ "if str1==str3:\n",
+ " print 'Both strings are equal'\n",
+ "elif str1<str2:\n",
+ " print 'First string is lesser than second string'\n",
+ "else:\n",
+ " print 'First string is greater than second string'\n",
+ " \n",
+ "tempstr=' with C'\n",
+ "str1=str1+tempstr\n",
+ "print 'The concated string is ',str1\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The length of the string is 11\n",
+ "First string is Programming and copied string is Programming\n",
+ "First string is greater than second string\n",
+ "The concated string is Programming with C\n"
+ ]
+ }
+ ],
+ "prompt_number": 7
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.8,Page Number: 10.7<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "def strlength(str1):\n",
+ " count=0\n",
+ " for i in str1:\n",
+ " count+=1\n",
+ " \n",
+ " return count\n",
+ "def strcopy(src):\n",
+ " dst=[]\n",
+ " for i in src:\n",
+ " dst.append(i)\n",
+ " \n",
+ " dst=''.join(dst)\n",
+ " \n",
+ " return dst\n",
+ "\n",
+ "\n",
+ "str1='New Delhi'\n",
+ "len1=strlength(str1)\n",
+ "print 'The length of the string is ',len1\n",
+ "\n",
+ "str2=strcopy(str1)\n",
+ "print 'First string is %s and copied string is %s' %(str1,str2)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The length of the string is 9\n",
+ "First string is New Delhi and copied string is New Delhi\n"
+ ]
+ }
+ ],
+ "prompt_number": 8
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.9,Page Number: 10.9<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "\n",
+ "def strcompare(str1,str2):\n",
+ " \n",
+ " len1=len(str1)\n",
+ " len2=len(str2)\n",
+ " \n",
+ " if len1<len2:\n",
+ " length=len1\n",
+ " else:\n",
+ " length=len2\n",
+ " \n",
+ " for i in xrange(0,length):\n",
+ " if str1[i]<str2[i]:\n",
+ " return -1\n",
+ " elif str1[i]>str2[i]:\n",
+ " return 1\n",
+ " \n",
+ " return 0\n",
+ "\n",
+ "str1='Programming'\n",
+ "str2='Computer'\n",
+ "status=strcompare(str1,str2)\n",
+ "if status==-1:\n",
+ " print 'First string is lesser than second string'\n",
+ "elif status==1:\n",
+ " print 'First string is greater than second string'\n",
+ "else:\n",
+ " print 'Both strings ae equal'\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "First string is greater than second string\n"
+ ]
+ }
+ ],
+ "prompt_number": 9
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.10, Page Number: 10.10<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "def leftconcat(dst,src):\n",
+ " dst=src+dst\n",
+ " return dst\n",
+ "\n",
+ "def rightconcat(dst,src):\n",
+ " dst=dst+src\n",
+ " return dst\n",
+ "\n",
+ "str1='Hello'\n",
+ "str2='Friends'\n",
+ "\n",
+ "tempstr=leftconcat(str2,str1)\n",
+ "print 'The first string after left concatenation becomes ', tempstr\n",
+ "\n",
+ "tempstr=rightconcat(str2,str1)\n",
+ "print 'The first string after right concatenation becomes', tempstr\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The first string after left concatenation becomes HelloFriends\n",
+ "The first string after right concatenation becomes FriendsHello\n"
+ ]
+ }
+ ],
+ "prompt_number": 10
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.11,Page Numbr: 10.12<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "\n",
+ "str1='All good boys have bread'\n",
+ "count=0\n",
+ "\n",
+ "for i in str1:\n",
+ " if i=='a' or i=='e'or i=='i' or i=='o' or i=='u' or i=='A' or i=='E' or i=='I' or i=='O' or i=='U' :\n",
+ " count+=1\n",
+ " \n",
+ "print 'Total number of vowels in a given text are ',count"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Total number of vowels in a given text are 8\n"
+ ]
+ }
+ ],
+ "prompt_number": 11
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.12, Page Number: 10.13<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "ch1='A'\n",
+ "ch2=ord(ch1)+3\n",
+ "print chr(ch2)\n",
+ "\n",
+ "ch1=chr(ord(ch1)+1)\n",
+ "print ch1\n",
+ "\n",
+ "print ord('a')\n",
+ "print ord('l')\n",
+ "\n",
+ "val=ord(ch1)*ch2\n",
+ "print val\n",
+ "\n",
+ "print chr(100)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "D\n",
+ "B\n",
+ "97\n",
+ "108\n",
+ "4488\n",
+ "d\n"
+ ]
+ }
+ ],
+ "prompt_number": 12
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.13, Page Number: 10.13<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "text='I am studying 6 Theory Papers & 4 practicals'\n",
+ "\n",
+ "len1=len(text)\n",
+ "text=list(text)\n",
+ "for i in xrange(0,len1):\n",
+ " if text[i]>='a' and text[i]<='z':\n",
+ " text[i]=chr(ord(text[i])+ord('A')-ord('a'))\n",
+ " \n",
+ " \n",
+ "text=''.join(text)\n",
+ "\n",
+ "print 'The text after converting lowercase alphabets to uppercase is '\n",
+ "print text"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The text after converting lowercase alphabets to uppercase is \n",
+ "I AM STUDYING 6 THEORY PAPERS & 4 PRACTICALS\n"
+ ]
+ }
+ ],
+ "prompt_number": 13
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.14, Page Number: 10.14<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "text='The programming is a systematic process'\n",
+ "substr='pro'\n",
+ "text_len=len(text)\n",
+ "sub_len=len(substr)\n",
+ "text=list(text)\n",
+ "substr=list(substr)\n",
+ "\n",
+ "for i in xrange(0,text_len-sub_len+1):\n",
+ " \n",
+ " for j in xrange(0,sub_len):\n",
+ " \n",
+ " if text[i+j]==substr[j]:\n",
+ " continue\n",
+ " else:\n",
+ " break\n",
+ " \n",
+ " if j==sub_len-1:\n",
+ " print 'The substring is present from subscript %d onwards' %i\n",
+ " \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The substring is present from subscript 4 onwards\n",
+ "The substring is present from subscript 32 onwards\n"
+ ]
+ }
+ ],
+ "prompt_number": 14
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h3>Example 10.15,Page number: 10.15<h3>"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "\n",
+ "\n",
+ "def reorder(x):\n",
+ "\n",
+ " n=len(x)\n",
+ " for item in range(0,n-1):\n",
+ " for i in range(item+1,n):\n",
+ " if x[item]>x[i]:\n",
+ " temp=x[item]\n",
+ " x[item]=x[i]\n",
+ " x[i]=temp\n",
+ "\n",
+ "\n",
+ " return\n",
+ "\n",
+ "x=['PACIFIC','ATLANTIC','INDIAN','CARIBBEAN','BERING','BLACK','RED','NORTH','BALTIC','CASPIAN']\n",
+ "print 'Original list of strings :\\n\\n'\n",
+ "\n",
+ "for i in x:\n",
+ " print \"String : \",i\n",
+ "\n",
+ "reorder(x)\n",
+ "\n",
+ "print \"\\nReodered list of strings : \\n\\n\"\n",
+ "\n",
+ "for i in x:\n",
+ " print \"String : \",i\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Original list of strings :\n",
+ "\n",
+ "\n",
+ "String : PACIFIC\n",
+ "String : ATLANTIC\n",
+ "String : INDIAN\n",
+ "String : CARIBBEAN\n",
+ "String : BERING\n",
+ "String : BLACK\n",
+ "String : RED\n",
+ "String : NORTH\n",
+ "String : BALTIC\n",
+ "String : CASPIAN\n",
+ "\n",
+ "Reodered list of strings : \n",
+ "\n",
+ "\n",
+ "String : ATLANTIC\n",
+ "String : BALTIC\n",
+ "String : BERING\n",
+ "String : BLACK\n",
+ "String : CARIBBEAN\n",
+ "String : CASPIAN\n",
+ "String : INDIAN\n",
+ "String : NORTH\n",
+ "String : PACIFIC\n",
+ "String : RED\n"
+ ]
+ }
+ ],
+ "prompt_number": 15
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [],
+ "language": "python",
+ "metadata": {},
+ "outputs": [],
+ "prompt_number": 15
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+} \ No newline at end of file
generated by cgit (git 2.34.1) at 2024-12-20 17:18:35 +0000