[BCSD Lab] 박종범 4차시 미션 제출합니다.

src/main/java/LadderSimulator.java

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+import java.util.List;
+
+import model.Ladder;
+import model.Person;
+import util.InputParser;
+import view.InputView;
+import view.OutPutView;
+
+public class LadderSimulator {
+
+    private Ladder ladder;
+    private int height;
+    private int width;
+
+    public void start() {
+        processLadderInput();
+        processLadderPersonMove();
+        processLadderResult();
+    }
+
+    private void processLadderInput() {
+        List<Person> persons = InputParser.parsePersons(InputView.inputPersons());
+        List<String> results = InputParser.parseResults(InputView.inputResults());
+        height = InputParser.parseLadderHeight(InputView.inputLadderHeight());
+        width = persons.size() - 1;
+
+        this.ladder = new Ladder(height, width, persons, results);
+        OutPutView.printLadder(ladder);
+    }
+
+    private void processLadderPersonMove() {
+        for (Person person : ladder.getPersons()) {
+            PersonMovement(person);
+        }
+    }
+
+    private void processLadderResult() {
+        while (true) {
+            String resultPersonName = InputView.inputResultPerson();
+
+            if (resultPersonName.equals("all")) { // all 입력시 모든 사람의 결과 출력
+                OutPutView.printLadderResult(ladder);
+                return;
+            }
+
+            Person resultPerson = ladder.getPersonByName(resultPersonName);
+            OutPutView.printPersonResult(resultPerson, ladder);
+        }
+    }
+
+    // 우측우선이동임
+    private void personMovement(Person person) {
+        for (int nowHeight = 0; nowHeight < height; nowHeight++) {
+            if (canMoveRight(person, ladder, nowHeight)) {
+                person.moveRight();
+                continue;
+            }
+
+            if (canMoveLeft(person, ladder, nowHeight)) {
+                person.moveLeft();
+                continue;
+            }
+        }
+    }
+
+    private boolean canMoveLeft(Person person, Ladder ladder, int nowHeight) {
+        return person.getPosition() > 0 && ladder.isPoint(nowHeight, person.getPosition() - 1);
+    }
+
+    private boolean canMoveRight(Person person, Ladder ladder, int nowHeight) {
+        return person.getPosition() < width && ladder.isPoint(nowHeight, person.getPosition());
+    }
+
+}

src/main/java/Main.java

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+public class Main {
+    public static void main(String[] args) {
+        LadderSimulator simulator = new LadderSimulator();
+        simulator.start();
+    }
+}

src/main/java/model/Ladder.java

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+package model;
+
+import java.util.List;
+import java.util.stream.Stream;
+
+public class Ladder {
+
+    private final List<Line> lines;
+    private List<Person> persons;
+    private List<String> results;
+
+    public Ladder(int height, int width, List<Person> persons, List<String> results) {
+        this.lines = Stream.generate(() -> new Line(width))
+                .limit(height)
+                .toList();
+        this.persons = persons;
+        this.results = results;
+    }
+
+    public List<Line> getLines() {
+        return lines;
+    }
+
+    public List<Person> getPersons() {
+        return persons;
+    }
+
+    public List<String> getResults() {
+        return results;
+    }
+
+    public boolean isPoint(int lineIndex, int pointIndex) {
+        if (lineIndex < 0 || lineIndex >= lines.size()) {
+            throw new IndexOutOfBoundsException("인덱스 범위 초과");
+        }
+        return lines.get(lineIndex).isPoint(pointIndex);
+    }
+
+    public Person getPersonByName(String name) {
+        return persons.stream()
+                .filter(person -> person.getName().equals(name))
+                .findFirst()
+                .orElseThrow(() -> new IllegalArgumentException("해당 이름의 사람이 없습니다: "));
+    }
+
+}

src/main/java/model/Line.java

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+package model;
+
+import java.util.List;
+
+import util.LadderRandomGenerator;
+
+public class Line {
+
+    private final List<Boolean> points;
+
+    public Line(int length) {
+        this.points = LadderRandomGenerator.generateRandomLine(length);
+    }
+
+    public List<Boolean> getPoints() {
+        return points;
+    }
+
+    public boolean isPoint(int index) {
+        if (index < 0 || index >= points.size()) {
+            throw new IndexOutOfBoundsException("인덱스 범위 초과");
+        }
+        return points.get(index);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        for (Boolean point : points) {
+            sb.append("|");
+            sb.append(point ? "-----" : "     ");
+        }
+        sb.append("|");
+        return sb.toString();
+    }
+}

src/main/java/model/Person.java

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+package model;
+
+import java.util.List;
+
+public class Person {
+
+    private final String name;
+    private int position;
+
+    public Person(String name, int position) {
+        this.name = name;
+        this.position = position;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getPosition() {
+        return position;
+    }
+
+    public void moveLeft() {
+        position--;
+    }
+
+    public void moveRight() {
+        position++;
+    }
+
+    public static List<Person> fromNames(List<String> names) {
+        return names.stream()
+                .map(name -> new Person(name, names.indexOf(name)))
+                .toList();
+
+    }
+}

src/main/java/util/InputParser.java

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+package util;
+
+import java.util.Arrays;
+import java.util.List;
+
+import model.Person;
+
+public class InputParser {
+
+    public static int parseLadderHeight(String input) {
+        LadderVaildator.validateLadderHeight(input);
+        return Integer.parseInt(input);
+    }
+
+    public static int parseLadderWidth(String input) {
+        LadderVaildator.validateLadderWidth(input);
+        return Integer.parseInt(input);
+    }
+
+    public static List<Person> parsePersons(String input) {
+        LadderVaildator.validatePersons(input);
+        String[] names = input.split(",");
+        return Person.fromNames(Arrays.asList(names));
+    }
+
+    public static List<String> parseResults(String input) {
+        LadderVaildator.validateResults(input);
+        return Arrays.asList(input.split(","));
+    }
+}

src/main/java/util/LadderRandomGenerator.java

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+
+package util;
+
+import java.util.List;
+import java.util.stream.Stream;
+
+public class LadderRandomGenerator {
+
+    public static boolean generateRandomBoolean() {
+        return Math.random() < 0.5;
+    }
+
+    public static List<Boolean> generateRandomLine(int length) {
+        return Stream.generate(LadderRandomGenerator::generateRandomBoolean)
+                .limit(length)
+                .toList();
+    }
+}

src/main/java/util/LadderVaildator.java

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+
+package util;
+
+public class LadderVaildator {
+
+    public static void validateLadderHeight(String height) {
+        if (height == null || height.isEmpty()) {
+            throw new IllegalArgumentException("사다리 높이는 비어있을 수 없습니다.");
+        }
+
+        if (height.matches("\\D+")) {
+            throw new IllegalArgumentException("사다리 높이는 숫자로 입력해야 합니다.");
+        }
+
+        int heightValue = Integer.parseInt(height);
+
+        if (heightValue <= 0) {
+            throw new IllegalArgumentException("사다리 높이는 0보다 큰 숫자여야 합니다.");
+        }
+
+    }
+
+    public static void validateLadderWidth(String width) {
+        if (width == null || width.isEmpty()) {
+            throw new IllegalArgumentException("사다리 넓이는 비어있을 수 없습니다.");
+        }
+
+        if (width.matches("\\D+")) {
+            throw new IllegalArgumentException("사다리 넓이는 숫자로 입력해야 합니다.");
+        }
+
+        int widthValue = Integer.parseInt(width);
+
+        if (widthValue <= 0) {
+            throw new IllegalArgumentException("사다리 넓이는 0보다 큰 숫자여야 합니다.");
+        }
+
+    }
+
+    public static void validatePersons(String persons) {
+        if (persons == null || persons.isEmpty()) {
+            throw new IllegalArgumentException("참여자 이름은 비어있을 수 없습니다.");
+        }
+    }
+
+    public static void validateResults(String results) {
+        if (results == null || results.isEmpty()) {
+            throw new IllegalArgumentException("실행 결과는 비어있을 수 없습니다.");
+        }
+    }
+}

src/main/java/view/InputView.java

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+package view;
+
+import java.util.Scanner;
+
+public class InputView {
+
+    private static final Scanner scanner = new Scanner(System.in);
+
+    public static String inputLadderHeight() {
+        System.out.print("사다리의 높이는 몇 개인가요?");
+        return scanner.nextLine();
+    }
+
+    public static String inputPersons() {
+        System.out.print("참여할 사람 이름을 입력하세요. (이름은 쉼표(,)로 구분하세요)");
+        return scanner.nextLine();
+    }
+
+    public static String inputResults() {
+        System.out.print("실행 결과를 입력하세요. (결과는 쉼표(,)로 구분하세요)");
+        return scanner.nextLine();
+    }
+
+    public static String inputResultPerson() {
+        System.out.print("결과를 보고 싶은 사람은?");
+        return scanner.nextLine();
+    }
+
+}

src/main/java/view/OutPutView.java

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+package view;
+
+import java.util.List;
+
+import model.Ladder;
+import model.Line;
+import model.Person;
+
+public class OutPutView {
+
+    public static void printLadder(Ladder ladder) {
+        List<Line> lines = ladder.getLines();
+        System.out.println("사다리 결과");
+        for (Person person : ladder.getPersons()) {
+            System.out.print(person.getName() + " ");
+        }
+        System.out.println();
+        for (Line line : lines) {
+            System.out.println(line);
+        }
+        for (String result : ladder.getResults()) {
+            System.out.print(result + "   ");
+        }
+        System.out.println();
+    }
+
+    public static void printLadderResult(Ladder ladder) {
+        System.out.println("실행 결과");
+        for (Person person : ladder.getPersons()) {
+            System.out.println(person.getName() + " : " + ladder.getResults().get(person.getPosition()));
+        }
+    }
+
+    public static void printPersonResult(Person person, Ladder ladder) {
+        System.out.println(ladder.getResults().get(person.getPosition()));
+    }
+}