chore: homework

src/main/java/me/alex4386/gachon/sw14462/Main.java

@@ -5,7 +5,7 @@
 import java.util.*;
 
 public class Main {
-    public static String currentTarget = "day11";
+    public static String currentTarget = "day14";
     public static boolean fallbackToLatest = true;
 
     public static Map<String, Class<?>> getAvailableTargetClassNames() {

src/main/java/me/alex4386/gachon/sw14462/day11/quiz/PersonAddress.java

@@ -0,0 +1,58 @@
+package me.alex4386.gachon.sw14462.day11.quiz;
+
+public class PersonAddress {
+
+    public static String nationality = "Korea";
+
+    private String firstName;
+    private String lastName;
+    private String emailAddress;
+
+
+    private String phoneNumber;
+
+    public String getFirstName() {
+        return this.firstName;
+    }
+
+    public String getLastName() {
+        return this.lastName;
+    }
+
+    public String getEmailAddress() {
+        return this.emailAddress;
+    }
+
+    public String getPhoneNumber() {
+        return this.phoneNumber;
+    }
+
+    public static String getNationality() {
+        return PersonAddress.nationality;
+    }
+
+    public void setName(String firstName, String lastName) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+    }
+
+    public void setEmailAddress(String emailAddress) {
+        this.emailAddress = emailAddress;
+    }
+
+    public void setPhoneNumber(String phoneNumber) {
+        this.phoneNumber = phoneNumber;
+    }
+
+    public void printPersonInfo() {
+        System.out.println("First Name: " + this.firstName);
+        System.out.println("Last Name: " + this.lastName);
+        System.out.println("Email Address: " + this.emailAddress);
+        System.out.println("Phone Number: " + this.phoneNumber);
+        System.out.println("Nationality: " + PersonAddress.nationality);
+    }
+
+    public boolean equals(PersonAddress other) {
+        return this.firstName.equals(other.firstName) && this.lastName.equals(other.lastName);
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day11/quiz/PersonAddressTest.java

@@ -0,0 +1,25 @@
+package me.alex4386.gachon.sw14462.day11.quiz;
+
+public class PersonAddressTest {
+    public static void main(String[] args) {
+        PersonAddress addr1 = new PersonAddress();
+        PersonAddress addr2 = new PersonAddress();
+
+        addr1.setName("Alex", "Lee");
+        addr1.setEmailAddress("[email protected]");
+        addr1.setPhoneNumber("010-1234-5678");
+
+        addr2.setName("Alex", "Lee");
+        addr2.setEmailAddress("[email protected]");
+        addr2.setPhoneNumber("010-5678-1234");
+
+        addr1.printPersonInfo();
+        addr2.printPersonInfo();
+
+        if (addr1.equals(addr2)) {
+            System.out.println("Same person");
+        } else {
+            System.out.println("Different person");
+        }
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day13/Main.java

@@ -0,0 +1,18 @@
+package me.alex4386.gachon.sw14462.day13;
+
+import me.alex4386.gachon.sw14462.utils.Chainloader;
+
+public class Main {
+    public static String chainloadTarget = "ex7_1b";
+
+    public static void main(String[] args) throws Throwable {
+        String packageName = Main.class.getPackage().getName();
+        String chainLoadTargetClass = packageName + "." + chainloadTarget + ".Main";
+
+        try {
+            Chainloader.chainloadTarget(chainLoadTargetClass, args);
+        } catch (Exception e) {
+            throw e;
+        }
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day13/ex7_1/ArrayOfTemperatures2.java

@@ -0,0 +1,43 @@
+package me.alex4386.gachon.sw14462.day13.ex7_1;
+
+import java.util.Scanner;
+
+/**
+ Reads temperatures from the user and shows which are above
+ and which are below the average of all the temperatures.
+ */
+public class ArrayOfTemperatures2
+{
+    public static void main(String[] args) {
+        Scanner keyboard = new Scanner(System.in);
+        System.out.println("How many temperatures do you have?");
+        int size = keyboard.nextInt();
+        double[] temperature = new double[size];
+        // Read temperatures and compute their average:
+        System.out.println("Enter " + temperature.length +
+                " temperatures:");
+        double sum = 0;
+        for (int index = 0; index < temperature.length; index++) {
+            temperature[index] = keyboard.nextDouble();
+            sum = sum + temperature[index];
+        }
+        double average = sum / temperature.length;
+        System.out.println("The average temperature is " +
+                average);
+// Display each temperature and its relation to the
+// average:
+        System.out.println("The temperatures are");
+        for (int index = 0; index < temperature.length; index++) {
+            if (temperature[index] < average)
+                System.out.println(temperature[index] +
+                        " below average");
+            else if (temperature[index] > average)
+                System.out.println(temperature[index] +
+                        " above average");
+            else //temperature[index] == average
+                System.out.println(temperature[index] +
+                        " the average");
+        }
+        System.out.println("Have a nice week.");
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day13/ex7_1/Main.java

@@ -0,0 +1,7 @@
+package me.alex4386.gachon.sw14462.day13.ex7_1;
+
+public class Main {
+    public static void main(String[] args) {
+        ArrayOfTemperatures2.main(args);
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day13/ex7_1a/Main.java

@@ -0,0 +1,7 @@
+package me.alex4386.gachon.sw14462.day13.ex7_1a;
+
+public class Main {
+    public static void main(String[] args) {
+        ScoreReaderTest.main(args);
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day13/ex7_1a/ScoreReader.java

@@ -0,0 +1,51 @@
+package me.alex4386.gachon.sw14462.day13.ex7_1a;
+
+public class ScoreReader {
+    private int[] scores;
+    private int currentIdx;
+
+    public ScoreReader(int size) {
+        this.scores = new int[size];
+        this.currentIdx = 0;
+    }
+
+    public void addScore(int score) {
+        if (this.currentIdx >= this.scores.length) {
+            System.out.println("Scores are full");
+            return;
+        }
+
+        this.scores[this.currentIdx] = score;
+        this.currentIdx++;
+    }
+
+    public double getAverage() {
+        double sum = 0;
+        for (int i = 0; i < this.currentIdx; i++) {
+            sum += this.scores[i];
+        }
+
+        return sum / this.currentIdx;
+    }
+
+    public int[] getScoresAboveAverage() {
+        double average = this.getAverage();
+
+        int size = 0;
+        for (int i = 0; i < this.currentIdx; i++) {
+            if (this.scores[i] > average) {
+                size++;
+            }
+        }
+
+        int[] data = new int[size];
+        for (int i = 0, j = 0; i < this.currentIdx; i++) {
+            if (this.scores[i] > average) {
+                data[j] = this.scores[i];
+                j++;
+            }
+        }
+
+        return data;
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day13/ex7_1a/ScoreReaderTest.java

@@ -0,0 +1,32 @@
+package me.alex4386.gachon.sw14462.day13.ex7_1a;
+
+import java.util.Scanner;
+
+public class ScoreReaderTest {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.print("Enter the number of students: ");
+        int studentCount = scanner.nextInt();
+
+        if (studentCount <= 0) {
+            System.out.println("Invalid number of students");
+            return;
+        }
+
+        ScoreReader scoreReader = new ScoreReader(studentCount);
+        for (int i = 0; i < studentCount; i++) {
+            System.out.print("Enter the score of student " + (i + 1) + ": ");
+            int score = scanner.nextInt();
+            scoreReader.addScore(score);
+        }
+
+        System.out.println("Average score: " + scoreReader.getAverage());
+        int[] scoresAboveAverage = scoreReader.getScoresAboveAverage();
+        System.out.print("Scores above average: ");
+        for (int i = 0; i < scoresAboveAverage.length; i++) {
+            System.out.print(scoresAboveAverage[i] + " ");
+        }
+        System.out.println();
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day13/ex7_1b/FrequencyAnalyzer.java

@@ -0,0 +1,45 @@
+package me.alex4386.gachon.sw14462.day13.ex7_1b;
+
+public class FrequencyAnalyzer {
+    private String input;
+    private int[] frequency;
+
+    public FrequencyAnalyzer(String input) {
+        this.input = input;
+        this.frequency = new int[10];
+
+        this.analyze();
+    }
+
+    public void setInput(String input) {
+        this.reset();
+        this.input = input;
+        this.analyze();
+    }
+
+    private void reset() {
+        // reuse the array, but initialize to 0
+        for (int i = 0; i < this.frequency.length; i++) {
+            this.frequency[i] = 0;
+        }
+    }
+
+    public int[] getFrequency() {
+        return this.frequency;
+    }
+
+    private void analyze() {
+        // split to each character
+        String[] characters = this.input.split("");
+
+        // count frequency
+        for (String character : characters) {
+            try {
+                int number = Integer.parseInt(character);
+                this.frequency[number]++;
+            } catch (NumberFormatException e) {
+                // ignore
+            }
+        }
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day13/ex7_1b/FrequencyAnalyzerTest.java

@@ -0,0 +1,28 @@
+package me.alex4386.gachon.sw14462.day13.ex7_1b;
+
+import java.util.Scanner;
+
+public class FrequencyAnalyzerTest {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        FrequencyAnalyzer analyzer = null;
+
+        while (true) {
+            System.out.print("Enter your phone number: ");
+            String phoneNumber = scanner.nextLine();
+
+            if (phoneNumber.equals("exit")) {
+                break;
+            }
+
+            analyzer = analyzer == null ? new FrequencyAnalyzer(phoneNumber) : analyzer;
+            analyzer.setInput(phoneNumber);
+
+            System.out.println("Frequency of each digit:");
+            int[] frequency = analyzer.getFrequency();
+            for (int i = 0; i < frequency.length; i++) {
+                System.out.println(i + ": " + frequency[i]);
+            }
+        }
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day13/ex7_1b/Main.java

@@ -0,0 +1,7 @@
+package me.alex4386.gachon.sw14462.day13.ex7_1b;
+
+public class Main {
+    public static void main(String[] args) {
+        FrequencyAnalyzerTest.main(args);
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day14/Main.java

@@ -0,0 +1,18 @@
+package me.alex4386.gachon.sw14462.day14;
+
+import me.alex4386.gachon.sw14462.utils.Chainloader;
+
+public class Main {
+    public static String chainloadTarget = "ex7_8";
+
+    public static void main(String[] args) throws Throwable {
+        String packageName = Main.class.getPackage().getName();
+        String chainLoadTargetClass = packageName + "." + chainloadTarget + ".Main";
+
+        try {
+            Chainloader.chainloadTarget(chainLoadTargetClass, args);
+        } catch (Exception e) {
+            throw e;
+        }
+    }
+}