{ "metadata": { "name": "" }, "nbformat": 3, "nbformat_minor": 0, "worksheets": [ { "cells": [ { "cell_type": "heading", "level": 1, "metadata": {}, "source": [ "Chapter 3 : For Loops, Strings, and Arrays: Word Jumble" ] }, { "cell_type": "heading", "level": 3, "metadata": {}, "source": [ "example 3.1 page no :83" ] }, { "cell_type": "code", "collapsed": false, "input": [ "\n", "print \"Counting forward:\\n\";\n", "for i in range(10):\n", " print i ,\n", "print \"\\n\\nCounting backward:\\n\";\n", "for i in range(1,10,-1):\n", " print i,\n", "\n", "print \"\\n\\nCounting by fives:\\n\";\n", "for i in range(0,51,5):\n", " print i,\n", " \n", "print \"\\n\\nCounting with null statements:\\n\";\n", "count = 0;\n", "while ( count < 10 ):\n", " print count ,\n", " count += 1\n", "\n", "print \"\\n\\nCounting with nested for loops:\\n\";\n", "ROWS = 5;\n", "COLUMNS = 3;\n", "for i in range(ROWS):\n", " for j in range(COLUMNS):\n", " print i , \",\" , j ," ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Counting forward:\n", "\n", "0 1 2 3 4 5 6 7 8 9 \n", "\n", "Counting backward:\n", "\n", "\n", "\n", "Counting by fives:\n", "\n", "0 5 10 15 20 25 30 35 40 45 50 \n", "\n", "Counting with null statements:\n", "\n", "0 1 2 3 4 5 6 7 8 9 \n", "\n", "Counting with nested for loops:\n", "\n", "0 , 0 0 , 1 0 , 2 1 , 0 1 , 1 1 , 2 2 , 0 2 , 1 2 , 2 3 , 0 3 , 1 3 , 2 4 , 0 4 , 1 4 , 2\n" ] } ], "prompt_number": 1 }, { "cell_type": "heading", "level": 3, "metadata": {}, "source": [ "example 3.2 page no : 90" ] }, { "cell_type": "code", "collapsed": false, "input": [ "\n", "word1 = \"Game\";\n", "word2 =\"Over\"\n", "word3 = '!'\n", "phrase = word1 + \" \" + word2 + word3;\n", "print \"The phrase is: \" , phrase , \"\\n\";\n", "print \"The phrase has \" , len(phrase) , \" characters in it.\\n\";\n", "print \"The character at position 0 is: \" , phrase[0] , \"\\n\\n\";\n", "print \"Changing the character at position 0.\\n\";\n", "#phrase[0] = 'L';\n", "print \"The phrase is now: \" , phrase , \"\\n\"\n", "for i in range(len(phrase)):\n", " print \"Character at position \" , i , \" is: \" , phrase[i] \n", "\n", "print \"\\nThe sequence 'Over' begins at location \";\n", "print phrase.find(\"Over\") \n", "if (\"eggplant\" not in phrase):\n", " print \"'eggplant' is not in the phrase.\\n\\n\";\n", "\n", "# Python does not support string erase function.\n", "#phrase.erase(4, 5); \n", "print \"The phrase is now: \" , phrase \n", "#phrase.erase(4);\n", "print \"The phrase is now: \" , phrase \n", "#phrase.erase();\n", "print \"The phrase is now: \" , phrase \n", "if (phrase==''):\n", " print \"\\nThe phrase is no more.\\n\";" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "The phrase is: Game Over! \n", "\n", "The phrase has 10 characters in it.\n", "\n", "The character at position 0 is: G \n", "\n", "\n", "Changing the character at position 0.\n", "\n", "The phrase is now: Game Over! \n", "\n", "Character at position 0 is: G\n", "Character at position 1 is: a\n", "Character at position 2 is: m\n", "Character at position 3 is: e\n", "Character at position 4 is: \n", "Character at position 5 is: O\n", "Character at position 6 is: v\n", "Character at position 7 is: e\n", "Character at position 8 is: r\n", "Character at position 9 is: !\n", "\n", "The sequence 'Over' begins at location \n", "5\n", "'eggplant' is not in the phrase.\n", "\n", "\n", "The phrase is now: Game Over!\n", "The phrase is now: Game Over!\n", "The phrase is now: Game Over!\n" ] } ], "prompt_number": 2 }, { "cell_type": "heading", "level": 3, "metadata": {}, "source": [ "example 3.3 page no : 97" ] }, { "cell_type": "code", "collapsed": false, "input": [ "\n", "MAX_ITEMS = 10;\n", "inventory = [];\n", "\n", "inventory.append(\"sword\")\n", "inventory.append(\"armor\")\n", "inventory.append(\"shield\")\n", "print \"Your items:\\n\";\n", "for i in range(len(inventory)):\n", " print inventory[i]\n", "\n", "print \"\\nYou trade your sword for a battle axe.\";\n", "inventory[0] = \"battle axe\";\n", "print \"\\nYour items:\\n\";\n", "for i in range(len(inventory)):\n", " print inventory[i]\n", "\n", "print \"\\nThe item name '\" , inventory[0] , \"' has \",\n", "print len(inventory[0]) , \" letters in it.\\n\";\n", "print \"\\nYou find a healing potion.\";\n", "if (len(inventory) < MAX_ITEMS):\n", " inventory.append(\"healing potion\")\n", "else:\n", " print \"You have too many items and can't carry another.\";\n", "print \"\\nYour items:\\n\";\n", "for i in range(len(inventory)):\n", " print inventory[i]\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Your items:\n", "\n", "sword\n", "armor\n", "shield\n", "\n", "You trade your sword for a battle axe.\n", "\n", "Your items:\n", "\n", "battle axe\n", "armor\n", "shield\n", "\n", "The item name ' battle axe ' has 10 letters in it.\n", "\n", "\n", "You find a healing potion.\n", "\n", "Your items:\n", "\n", "battle axe\n", "armor\n", "shield\n", "healing potion\n" ] } ], "prompt_number": 3 }, { "cell_type": "heading", "level": 3, "metadata": {}, "source": [ "example 3.4 page no : 104" ] }, { "cell_type": "code", "collapsed": false, "input": [ "\n", "ROWS = 3;\n", "COLUMNS = 3;\n", "board = [['O', 'X', 'O'],[' ', 'X', 'X'],['X', 'O', 'O']]\n", "print \"Here's the tic-tac-toe board:\\n\";\n", "for i in range(ROWS):\n", " for j in range(COLUMNS):\n", " print board[i][j],\n", " print ''\n", "\n", "print \"\\n'X' moves to the empty location.\\n\\n\";\n", "board[1][0] = 'X';\n", "print \"Now the tic-tac-toe board is:\\n\";\n", "for i in range(ROWS):\n", " for j in range(COLUMNS):\n", " print board[i][j],\n", " print ''\n", "print \"\\n'X' wins!\";" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Here's the tic-tac-toe board:\n", "\n", "O X O \n", " X X \n", "X O O \n", "\n", "'X' moves to the empty location.\n", "\n", "\n", "Now the tic-tac-toe board is:\n", "\n", "O X O \n", "X X X \n", "X O O \n", "\n", "'X' wins!\n" ] } ], "prompt_number": 4 }, { "cell_type": "heading", "level": 3, "metadata": {}, "source": [ "example 3.5 page no : 107" ] }, { "cell_type": "code", "collapsed": false, "input": [ "\n", "fields = ['WORD', 'HINT', 'NUM_FIELDS']\n", "NUM_WORDS = 5;\n", "WORDS = [ [\"wall\", \"Do you feel you're banging your head against something?\"],\n", " [\"glasses\", \"These might help you see the answer.\"],\n", " [\"labored\", \"Going slowly, is it?\"],\n", " [\"persistent\", \"Keep at it.\"],\n", " [\"jumble\", \"It's what the game is all about.\"]]\n", "\n", "class difficulty:\n", " EASY = 0\n", " MEDIUM = 1\n", " HARD = 2\n", " NUM_DIFF_LEVELS = 3\n", " \n", "print \"There are \" , difficulty.NUM_DIFF_LEVELS ,\" difficulty levels.\"\n", "\n", "import random\n", "#srand(static_cast(time(0)));\n", "choice = (int(random.random() * 10) % NUM_WORDS);\n", "theWord = WORDS[choice][0]; # word to guess\n", "theHint = WORDS[choice][1]; # hint for word\n", "jumble = theWord; # jumbled version of word\n", "length = len(jumble)\n", "for i in range(length):\n", " index1 = (int(random.random() * 10) % length);\n", " index2 = (int(random.random() * 10) % length);\n", " temp = list(jumble)\n", " temp[index1],temp[index2] = temp[index2],temp[index1]\n", " jumble = ''.join(temp)\n", "\n", "print \"\\t\\t\\tWelcome to Word Jumble!\\n\\n\";\n", "print \"Unscramble the letters to make a word.\\n\";\n", "print \"Enter 'hint' for a hint.\\n\";\n", "print \"Enter 'quit' to quit the game.\\n\\n\";\n", "print \"The jumble is: \" , jumble;\n", "\n", "print \"Your guess: \";\n", "guess = raw_input()\n", "\n", "while ((guess != theWord) and (guess != \"quit\")):\n", " if (guess == \"hint\"):\n", " print theHint;\n", " else:\n", " print \"Sorry, that's not it.\";\n", " print \"\\n\\nYour guess: \";\n", " guess = raw_input()\n", "\n", "if (guess == theWord):\n", " print \"\\nThat's it! You guessed it!\\n\";\n", "\n", "print \"\\nThanks for playing.\\n\";\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "There are 3 difficulty levels.\n", "\t\t\tWelcome to Word Jumble!\n", "\n", "\n", "Unscramble the letters to make a word.\n", "\n", "Enter 'hint' for a hint.\n", "\n", "Enter 'quit' to quit the game.\n", "\n", "\n", "The jumble is: gasslse\n", "Your guess: \n" ] }, { "name": "stdout", "output_type": "stream", "stream": "stdout", "text": [ "glasses\n" ] }, { "output_type": "stream", "stream": "stdout", "text": [ "\n", "That's it! You guessed it!\n", "\n", "\n", "Thanks for playing.\n", "\n" ] } ], "prompt_number": 1 } ], "metadata": {} } ] }