Ascii-art

ascii-art.java

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

public class CodingGame {
    private static final int A = 'A';
    private static final int Z = 'Z';

    // static mapping [A-Z] -> ascii-art
    private static final Map<Character, String> ARTS = new HashMap<>();

    static {
        ARTS.put('A', "\n #  \n# # \n### \n# # \n# # ");
        ARTS.put('B', "\n##  \n# # \n##  \n# # \n##  ");
        ARTS.put('C', "\n ## \n#   \n#   \n#   \n ## ");
        ARTS.put('D', "\n##  \n# # \n# # \n# # \n##  ");
        ARTS.put('E', "\n### \n#   \n##  \n#   \n### ");
        ARTS.put('F', "\n### \n#   \n##  \n#   \n#   ");
        ARTS.put('G', "\n ## \n#   \n# # \n# # \n ## ");
        ARTS.put('H', "\n# # \n# # \n### \n# # \n# # ");
        ARTS.put('I', "\n### \n #  \n #  \n #  \n### ");
        ARTS.put('J', "\n ## \n  # \n  # \n# # \n #  ");
        ARTS.put('K', "\n# # \n# # \n##  \n# # \n# # ");
        ARTS.put('L', "\n#   \n#   \n#   \n#   \n### ");
        ARTS.put('M', "\n# # \n### \n### \n# # \n# # ");
        ARTS.put('N', "\n### \n# # \n# # \n# # \n# # ");
        ARTS.put('O', "\n #  \n# # \n# # \n# # \n #  ");
        ARTS.put('P', "\n##  \n# # \n##  \n#   \n#   ");
        ARTS.put('Q', "\n #  \n# # \n# # \n ## \n  # ");
        ARTS.put('R', "\n##  \n# # \n##  \n# # \n# # ");
        ARTS.put('S', "\n ## \n#   \n #  \n  # \n##  ");
        ARTS.put('T', "\n### \n #  \n #  \n #  \n #  ");
        ARTS.put('U', "\n# # \n# # \n# # \n# # \n### ");
        ARTS.put('V', "\n# # \n# # \n# # \n# # \n #  ");
        ARTS.put('W', "\n# # \n# # \n### \n### \n# # ");
        ARTS.put('X', "\n# # \n# # \n #  \n# # \n# # ");
        ARTS.put('Y', "\n# # \n# # \n #  \n #  \n #  ");
        ARTS.put('Z', "\n### \n  # \n #  \n#   \n### ");
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String strToPrint = scanner.next().toUpperCase();

        String art = "";
        for (int idx = 0; idx < strToPrint.length(); idx++) {
            char currentChar = strToPrint.charAt(idx);

            if (currentChar >= A && currentChar <= Z) {
                String sketch = ARTS.get(currentChar);
                if (art.isEmpty()) {
                    art += sketch;
                    continue;
                }

                String[] sketches = sketch.split("\n");
                String[] rows = art.split("\n");
                art = "";
                for (int jdx = 0; jdx < sketches.length; jdx++) {
                    art += rows[jdx] + sketches[jdx] + "\n";
                }
            }
        }

        System.out.println("----------------------");
        System.out.println("-----Current ART------");
        System.out.println("----------------------");
        System.out.println(art);
        System.out.println("----------------------");

        // Processing arts (like we have two different programs)
        List<String> arts = extractArts(art);

        // Search in the constants
        for (String currentArt : arts) {
            for (Map.Entry<Character, String> ART : ARTS.entrySet()) {
                if (currentArt.equals(ART.getValue())) {
                    System.out.println("Found: " + ART.getKey());
                    break;
                }
            }
        }
    }

    /**
     * Processing ascii arts.
     *
     * @param art the graphic art.
     * @return processed arts.
     */
    private static List<String> extractArts(String art) {
        List<String> arts = new ArrayList<>();
        String[] rows = art.split("\n");

        for (int idx = 0; idx < rows.length; idx++) {
            String row = rows[idx];
            int beginArt = 0;
            int currentIdxArt = 0;
            for (int jdx = 0; jdx < row.length(); jdx++) {
                char currentChar = row.charAt(jdx);

                // Check whether it has an empty row on the y axe.
                if (currentChar == ' ') {
                    boolean isAnEmptyRow = true;
                    int currentRow = 1;
                    while (currentRow < rows.length) {
                        if (rows[currentRow].charAt(jdx) != ' ') {
                            isAnEmptyRow = false;
                            break;
                        }
                        currentRow++;
                    }

                    // Processing next art
                    if (isAnEmptyRow) {
                        if (!arts.isEmpty() && idx > 1 && (jdx - 3) > 0) {
                            beginArt = jdx - 3;
                        }
                        String currentArt = row.substring(beginArt, jdx);
                        if (idx > 1) { // not first row
                            // append
                            arts.set(currentIdxArt, arts.get(currentIdxArt) + "\n" + currentArt + " ");
                        } else {
                            // Add to arts
                            arts.add("\n" + currentArt + " ");
                            beginArt = jdx + 1;
                        }
                        currentIdxArt++;
                    }
                }
            }
        }
        return arts;
    }
}