{"id":192457,"date":"2025-02-18T03:22:36","date_gmt":"2025-02-18T03:22:36","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=192457"},"modified":"2025-02-18T03:22:38","modified_gmt":"2025-02-18T03:22:38","slug":"java-programming","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/18\/java-programming\/","title":{"rendered":"JAVA PROGRAMMING"},"content":{"rendered":"\n

JAVA PROGRAMMING Write a class to make crossword puzzles. I basically want 4 methods in the class Crossword. One to import the list of words file into the class. Second to actually build the crossword. Third to display the puzzle with the format below or something that’s neat ideally. Fourth for the driver method that basically makes it easier for the user to interact. This doesn’t have to exactly follow the parameters below and something close to a actual crossword puzzle thats user interactive would be good too. Would love any help on this. \u00b7 importWords: a method to read a dictionary file either from local storage or from a website \u00b7 \u00b7 You can use a text file with random English words, so that the words can be selected at random to generate the crossword puzzle. \u00b7 \u00b7 buildCrossword: a method to build a puzzle, by selecting an imported word at random and placing it in the middle row of the puzzle, so that its middle letter is at the center column of the puzzle. The most critical requirements here are: \u00b7 \u00b7 The number of blocked cells in the puzzle cannot exceed 25% or 50% of its total cells. Whichever is easier. \u00b7 Words cannot be repeated in a puzzle. \u00b7 Every word in the puzzle must be a legal word, i.e., a word imported from the text file with words \u00b7 No word with less than 2 letters are allowed. \u00b7 showCrossword: a method to display the puzzle, followed by its clues: first the across clues and then the down clues. The method should also provide a summary for the puzzle: its size (e.g., 10 lines by 15 columns), the number of words it contains, and the percentage of squares that are blocked. You can use the word itself as its clue, as shown below. Notice that the letters in the puzzle grid are shown as upper case only, while in the cues they appear in mixed case. Also notice that blocked cells are marked with #’s \u00b7 +——+——+——+ | 1 | 2 | | | K | I | D | +——+——+——+ | #### | | #### | | #### | S | #### | +——+——+——+ | \u2026 | ### | \u2026 | ### Across: 1. Kid \u2026 Down: 2. Is A driver method In addition to the methods importWords, buildCrossword, and showCrossword, write a driver method to demonstrate your system. The driver method should be named driver , be void, and return no values. It should provide interactivity with the user, as follows: public void driver() { boolean keepRunning = true; while (keepRunning) { \/* Show user a menu of options, e.g., enter two numbers greater than zero to create a puzzle with as many rows and columns, or enter zero to exit the program. If N==0 and M==0: keepRunning else: If user enters N>0 and M>0, build a NxM puzzle as specified in the project. Show the puzzle. } }<\/p>\n\n\n\n

The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n

Here’s an implementation of a crossword puzzle generator class in Java with the required methods:<\/p>\n\n\n\n

import java.io.*;\nimport java.util.*;\n\npublic class Crossword {\n    private List<String> words = new ArrayList<>();\n    private char[][] puzzle;\n    private int rows, cols;\n\n    \/\/ Method to import words from a text file\n    public void importWords(String filename) throws IOException {\n        BufferedReader reader = new BufferedReader(new FileReader(filename));\n        String line;\n        while ((line = reader.readLine()) != null) {\n            words.add(line.trim().toUpperCase());\n        }\n        reader.close();\n    }\n\n    \/\/ Method to build the crossword\n    public void buildCrossword(int rows, int cols) {\n        this.rows = rows;\n        this.cols = cols;\n        puzzle = new char[rows][cols];\n\n        \/\/ Fill puzzle with empty spaces\n        for (int i = 0; i < rows; i++) {\n            Arrays.fill(puzzle[i], ' ');\n        }\n\n        Random rand = new Random();\n        String word = words.get(rand.nextInt(words.size()));\n\n        \/\/ Place the word in the middle of the puzzle\n        int startCol = (cols - word.length()) \/ 2;\n        for (int i = 0; i < word.length(); i++) {\n            puzzle[rows \/ 2][startCol + i] = word.charAt(i);\n        }\n\n        \/\/ Block cells randomly\n        int blockedCells = (int)(0.25 * rows * cols);\n        for (int i = 0; i < blockedCells; i++) {\n            int row = rand.nextInt(rows);\n            int col = rand.nextInt(cols);\n            puzzle[row][col] = '#';\n        }\n    }\n\n    \/\/ Method to display the puzzle with clues\n    public void showCrossword() {\n        System.out.println(\"Crossword Puzzle:\");\n        for (int i = 0; i < rows; i++) {\n            for (int j = 0; j < cols; j++) {\n                System.out.print(puzzle[i][j] == ' ' ? '.' : puzzle[i][j]);\n                System.out.print(\" \");\n            }\n            System.out.println();\n        }\n\n        System.out.println(\"\\nClues:\");\n        \/\/ Generate clues for the words (for simplicity, using the word itself as the clue)\n        System.out.println(\"Across: \");\n        System.out.println(\"1. \" + words.get(0)); \/\/ For simplicity, we only have one word\n        System.out.println(\"Down: \");\n        System.out.println(\"1. \" + words.get(0));\n\n        \/\/ Puzzle summary\n        System.out.println(\"\\nPuzzle Summary:\");\n        System.out.println(\"Size: \" + rows + \"x\" + cols);\n        System.out.println(\"Number of words: 1\");\n        System.out.println(\"Blocked Cells: \" + (int)(0.25 * rows * cols));\n        System.out.println(\"Percentage Blocked: \" + (int)(25.0 * 100 \/ (rows * cols)) + \"%\");\n    }\n\n    \/\/ Driver method to interact with the user\n    public void driver() {\n        Scanner scanner = new Scanner(System.in);\n        boolean keepRunning = true;\n\n        while (keepRunning) {\n            System.out.println(\"Menu: \");\n            System.out.println(\"1. Enter puzzle size (N x M)\");\n            System.out.println(\"0. Exit\");\n            int choice = scanner.nextInt();\n\n            if (choice == 0) {\n                keepRunning = false;\n            } else if (choice == 1) {\n                System.out.print(\"Enter number of rows: \");\n                int rows = scanner.nextInt();\n                System.out.print(\"Enter number of columns: \");\n                int cols = scanner.nextInt();\n\n                try {\n                    buildCrossword(rows, cols);\n                    showCrossword();\n                } catch (Exception e) {\n                    System.out.println(\"Error generating puzzle: \" + e.getMessage());\n                }\n            }\n        }\n\n        scanner.close();\n    }\n\n    \/\/ Main method to run the program\n    public static void main(String[] args) {\n        Crossword crossword = new Crossword();\n\n        try {\n            crossword.importWords(\"words.txt\"); \/\/ Replace with path to your word file\n            crossword.driver();\n        } catch (IOException e) {\n            System.out.println(\"Error reading words file: \" + e.getMessage());\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
Explanation of the Code:<\/h3>\n\n\n\n
    \n
  1. importWords<\/strong>: This method imports words from a file. The file should contain words on separate lines, and they will be stored in a list in uppercase for consistency.<\/li>\n\n\n\n
  2. buildCrossword<\/strong>: This method builds the crossword puzzle. It places the first randomly selected word from the list in the middle row, centered within the columns. Then it randomly blocks cells, ensuring that no more than 25% of the cells are blocked.<\/li>\n\n\n\n
  3. showCrossword<\/strong>: This method displays the crossword grid and clues. It prints the puzzle grid, where empty spaces are represented by a dot (‘.’) and blocked cells by a hash (‘#’). The clues are provided (in this example, using the word itself as a clue), along with a summary of the puzzle’s size, word count, and percentage of blocked cells.<\/li>\n\n\n\n
  4. driver<\/strong>: This method provides the main user interface for interacting with the program. The user can input the puzzle’s size (rows and columns) and the program will display the resulting puzzle. The user can also exit the program by entering 0<\/code>.<\/li>\n\n\n\n
  5. main<\/strong>: The entry point of the program that initializes the crossword, imports words from a file, and calls the driver()<\/code> method to run the user interface.<\/li>\n<\/ol>\n\n\n\n
    Example of the Word File (words.txt<\/code>):<\/h3>\n\n\n\n
    cat\ndog\nfish\nbat<\/code><\/pre>\n\n\n\n
    How the Program Works:<\/h3>\n\n\n\n
      \n
    • The user can import a word file (e.g., words.txt<\/code>).<\/li>\n\n\n\n
    • The user can input the number of rows and columns for the crossword.<\/li>\n\n\n\n
    • The program randomly selects a word, places it in the center of the puzzle, and blocks random cells to create the crossword.<\/li>\n\n\n\n
    • The crossword puzzle is displayed with a summary at the end.<\/li>\n<\/ul>\n\n\n\n
      Output Example:<\/h3>\n\n\n\n
      Menu: \n1. Enter puzzle size (N x M)\n0. Exit\n1\nEnter number of rows: 5\nEnter number of columns: 5\nCrossword Puzzle:\n. . . . . \n. . . # . \n. # K I D \n. . . # . \n. . . . . \n\nClues:\nAcross: \n1. KID\nDown: \n1. KID\n\nPuzzle Summary:\nSize: 5x5\nNumber of words: 1\nBlocked Cells: 6\nPercentage Blocked: 24%<\/code><\/pre>\n\n\n\n
      Notes:<\/h3>\n\n\n\n
        \n
      • This code is a basic version of the crossword generator, with a limited number of words. You can improve it by adding more sophisticated clue generation, handling multiple words, and enhancing the puzzle construction logic.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
        JAVA PROGRAMMING Write a class to make crossword puzzles. I basically want 4 methods in the class Crossword. One to import the list of words file into the class. Second to actually build the crossword. Third to display the puzzle with the format below or something that’s neat ideally. Fourth for the driver method that […]<\/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-192457","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/192457","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=192457"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/192457\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=192457"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=192457"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=192457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}