(Project: Telephone-Number Word Generator Modification) If you have a computerized dictionary available, modify the program you wrote in Exercise 11.13 to look up the words in the dictionary. Some seven-letter combinations created by this program consist of two or more words (the phone number 843-2677 produces \u201cTHEBOSS\u201d).<\/p>\n\n\n\n
Exercise 11.13<\/p>\n\n\n\n
(Telephone-Number Word Generator) Standard telephone keypads contain the digits 0 through 9. The numbers 2 through 9 each have three letters associated with them, as is indicated by the following<\/p>\n\n\n\n
table:<\/p>\n\n\n\n
The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n Certainly! Let’s walk through a solution and explanation for Exercise 11.13<\/strong> and its modification<\/strong>, involving a telephone-number word generator that checks against a dictionary.<\/p>\n\n\n\n Here’s how letters are mapped to digits 2\u20139 on a standard keypad:<\/p>\n\n\n\n This version includes a dictionary check:<\/p>\n\n\n\n The problem involves converting a 7-digit phone number (like Each digit from 2 to 9 corresponds to multiple letters (e.g., Once the combinations are generated, we check each one against a preloaded dictionary<\/strong>. We use a This split is handled with a simple loop, checking each possible point of division (from 1 to 6), and seeing whether both segments are in the dictionary.<\/p>\n\n\n\n This approach allows the program to identify not just single words but also two-word combinations hidden in the phone number, enhancing the utility of the word generator. For example, By combining algorithmic generation with dictionary validation, this modified program provides both computational efficiency and practical relevance.<\/p>\n","protected":false},"excerpt":{"rendered":" (Project: Telephone-Number Word Generator Modification) If you have a computerized dictionary available, modify the program you wrote in Exercise 11.13 to look up the words in the dictionary. Some seven-letter combinations created by this program consist of two or more words (the phone number 843-2677 produces \u201cTHEBOSS\u201d). Exercise 11.13 (Telephone-Number Word Generator) Standard telephone keypads […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-214949","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/214949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=214949"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/214949\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=214949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=214949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=214949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\n\n\n\ud83d\udd22 Phone Keypad Mapping<\/strong><\/h3>\n\n\n\n
2 \u2192 ABC \n3 \u2192 DEF \n4 \u2192 GHI \n5 \u2192 JKL \n6 \u2192 MNO \n7 \u2192 PQRS \n8 \u2192 TUV \n9 \u2192 WXYZ<\/code><\/pre>\n\n\n\n
\n\n\n\n\u2705 Modified Solution (Python Program)<\/strong><\/h3>\n\n\n\n
from itertools import product\n\n# Mapping from digits to letters\ndigit_to_letters = {\n '2': 'ABC', '3': 'DEF',\n '4': 'GHI', '5': 'JKL',\n '6': 'MNO', '7': 'PQRS',\n '8': 'TUV', '9': 'WXYZ'\n}\n\n# Load a dictionary file into a set\ndef load_dictionary(file_path):\n with open(file_path, 'r') as file:\n words = {line.strip().upper() for line in file}\n return words\n\n# Generate all letter combinations for a phone number\ndef generate_combinations(phone_number):\n groups = [digit_to_letters[d] for d in phone_number if d in digit_to_letters]\n return (''.join(p) for p in product(*groups))\n\n# Check combinations against dictionary\ndef find_valid_words(phone_number, dictionary):\n matches = []\n for word in generate_combinations(phone_number):\n # Check full word\n if word in dictionary:\n matches.append(word)\n # Check for two-word splits\n for i in range(1, len(word)):\n if word[:i] in dictionary and word[i:] in dictionary:\n matches.append(f\"{word[:i]} {word[i:]}\")\n return matches\n\n# Example usage\nif __name__ == \"__main__\":\n phone_number = \"8432677\"\n dictionary = load_dictionary(\"dictionary.txt\") # Provide path to dictionary file\n results = find_valid_words(phone_number, dictionary)\n\n print(\"Valid words or combinations:\")\n for result in results:\n print(result)<\/code><\/pre>\n\n\n\n
\n\n\n\n\ud83d\udcd6 Explanation (300+ Words)<\/strong><\/h3>\n\n\n\n
8432677<\/code>) into all possible letter combinations based on the telephone keypad and then filtering them against an English dictionary to find meaningful words or combinations of words.<\/p>\n\n\n\n2 \u2192 A, B, C<\/code>). Given that each digit can map to 3 or 4 letters, a 7-digit number could theoretically yield over 2,000 combinations. To generate all those combinations, we use the itertools.product<\/code><\/strong> function, which computes the Cartesian product of input letter groups. For example, 8432677<\/code> translates to letter groups:<\/p>\n\n\n\n\n
set<\/code> to store dictionary words for fast look-up (O(1) time complexity per lookup). We check each 7-letter string in two ways:<\/p>\n\n\n\n\n
8432677<\/code> could yield \u201cTHEBOSS\u201d, which is meaningful and memorable\u2014ideal for a vanity phone number.<\/p>\n\n\n\n