Куков Михаил. ПрИ-201. Модуль 4

task01/src/com/example/task01/Point.java

@@ -7,8 +7,26 @@ public class Point {
     int x;
     int y;
 
+    public Point(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    void flip() {
+        int temp = x;
+        x = -y;
+        y = -temp;
+    }
+
+    double distance(Point point) {
+        return Math.sqrt((point.x - x) * (point.x - x) + (point.y - y) * (point.y - y));
+    }
+
+    public String toString() {
+        return String.format("(%d, %d)", x, y);
+    }
+
     void print() {
-        String pointToString = String.format("(%d, %d)", x, y);
-        System.out.println(pointToString);
+        System.out.println(this.toString());
     }
 }

task01/src/com/example/task01/Task01Main.java

@@ -2,18 +2,22 @@
 
 public class Task01Main {
     public static void main(String[] args) {
-        Point p1 = new Point();
-        p1.x = 10;
-        p1.y = 45;
-        Point p2 = new Point();
-        p2.x = 78;
-        p2.y = 12;
+        Point p1 = new Point(0, 3);
+        Point p2 = new Point(4, 0);
+
 
         System.out.println("Point 1:");
         p1.print();
         System.out.println(p1);
         System.out.println("Point 2:");
         p2.print();
         System.out.println(p2);
+
+        System.out.println(p1.distance(p2));
+
+        p1.flip();
+        p1.print();
+
+        System.out.println(p1.toString());
     }
 }

task02/src/com/example/task02/Task02Main.java

@@ -2,6 +2,10 @@
 
 public class Task02Main {
     public static void main(String[] args) {
+        TimeSpan test = new TimeSpan(0, 100, 0);
 
+        test.subtract(new TimeSpan(2, 0, 0));
+
+        System.out.println(test.toString());
     }
 }

task02/src/com/example/task02/TimeSpan.java

@@ -0,0 +1,71 @@
+package com.example.task02;
+
+public class TimeSpan {
+    private int hours;
+    private int minutes;
+    private int seconds;
+
+    public TimeSpan(int hours, int minutes, int seconds) {
+        this.hours = hours;
+        this.minutes = minutes;
+        this.seconds = seconds;
+        timeFormat();
+    }
+
+    private void timeFormat() {
+        if (seconds >= 60) {
+            minutes += seconds / 60;
+            seconds %= 60;
+        }
+
+        if (minutes >= 60) {
+            hours += minutes / 60;
+            minutes %= 60;
+        }
+    }
+
+    public int getHours() {
+        return hours;
+    }
+    public void setHours(int hours) {
+        this.hours = hours;
+        timeFormat();
+    }
+
+    public int getMinutes() {
+        return minutes;
+    }
+    public void setMinutes(int minutes) {
+        this.minutes = minutes;
+        timeFormat();
+    }
+
+    public int getSeconds() {
+        return seconds;
+    }
+    public void setSeconds(int seconds) {
+        this.seconds = seconds;
+        timeFormat();
+    }
+
+    public void add(TimeSpan time) {
+        seconds += time.seconds;
+        minutes += time.minutes;
+        hours += time.hours;
+        timeFormat();
+    }
+
+    public void subtract(TimeSpan time) {
+        int prog_data = hours * 3600 + minutes * 60 + seconds;
+        int user_data = time.hours * 3600 + time.minutes * 60 + time.seconds;
+        int new_time = Math.abs(user_data - prog_data);
+
+        hours = new_time / 3600;
+        minutes = (new_time % 3600) / 60;
+        seconds = new_time % 60;
+    }
+
+    public String toString() {
+        return String.format("%d hours, %d minutes, %d seconds", hours, minutes, seconds);
+    }
+}

task03/src/com/example/task03/ComplexNumber.java

@@ -0,0 +1,38 @@
+package com.example.task03;
+
+public class ComplexNumber {
+    private final double realPart;
+    private final double imgPart;
+
+    public ComplexNumber(double realPart, double imgPart){
+        this.realPart = realPart;
+        this.imgPart = imgPart;
+    }
+
+    public double getRealPart(){
+        return realPart;
+    }
+
+    public double getImgPart(){
+        return imgPart;
+    }
+
+    public ComplexNumber sumComplexNumber(ComplexNumber complexNumber){
+        double newRealPart = realPart + complexNumber.realPart;
+        double newImaginaryPart = imgPart + complexNumber.imgPart;
+        return new ComplexNumber(newRealPart, newImaginaryPart);
+    }
+
+    public ComplexNumber multiplyComplexNumber(ComplexNumber complexNumber){
+        double newRealPart = realPart * complexNumber.realPart - imgPart * complexNumber.imgPart;
+        double newImaginaryPart = realPart * complexNumber.imgPart + complexNumber.realPart * imgPart;
+        return new ComplexNumber(newRealPart, newImaginaryPart);
+    }
+
+    public String toString(){
+        if (imgPart < 0){
+            return realPart + " - " + Math.abs(imgPart) + "i";
+        }
+        return realPart + " + " + imgPart + "i";
+    }
+}

task03/src/com/example/task03/Task03Main.java

@@ -2,6 +2,13 @@
 
 public class Task03Main {
     public static void main(String[] args) {
+        ComplexNumber complexNum1 = new ComplexNumber(2, 3);
+        ComplexNumber complexNum2 = new ComplexNumber(2, -4);
 
+        System.out.println(complexNum1);
+        System.out.println(complexNum2);
+
+        System.out.println(complexNum1.sumComplexNumber(complexNum2));
+        System.out.println(complexNum1.multiplyComplexNumber(complexNum2));
     }
 }

task04/src/com/example/task04/Line.java

@@ -0,0 +1,26 @@
+package com.example.task04;
+
+public class Line {
+    private final Point p1;
+    private final Point p2;
+
+    public Line(Point p1, Point p2) {
+        this.p1 = p1;
+        this.p2 = p2;
+    }
+
+    public Point getP1() {
+        return p1;
+    }
+    public Point getP2() {
+        return p2;
+    }
+
+    public String toString() {
+        return String.format("p1:(%d, %d) p2:(%d, %d)", p1.x, p1.y, p2.x, p2.y);
+    }
+
+    public boolean isCollinearLine(Point p) {
+        return (p2.x - p1.x) * (p.y - p1.y) - (p.x - p1.x) * (p2.y - p1.y) == 0;
+    }
+}

task04/src/com/example/task04/Point.java

@@ -0,0 +1,26 @@
+package com.example.task04;
+
+/**
+ * Класс точки на плоскости
+ */
+public class Point {
+    final int x;
+    final int y;
+
+    public Point(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    double distance(Point point) {
+        return Math.sqrt((point.x - x) * (point.x - x) + (point.y - y) * (point.y - y));
+    }
+
+    public String toString() {
+        return String.format("(%d, %d)", x, y);
+    }
+
+    void print() {
+        System.out.println(this.toString());
+    }
+}

task04/src/com/example/task04/Task04Main.java

@@ -2,6 +2,13 @@
 
 public class Task04Main {
     public static void main(String[] args) {
+        Point p1 = new Point(3,2);
+        Point p2 = new Point(5,10);
+        Point p = new Point(4,6);
 
+        Line line = new Line(p1, p2);
+
+        System.out.println(line);
+        System.out.println(line.isCollinearLine(p));
     }
 }

task05/src/com/example/task05/Point.java

@@ -4,6 +4,8 @@
  * Точка в двумерном пространстве
  */
 public class Point {
+    final double x;
+    final double y;
 
     /**
      * Конструктор, инициализирующий координаты точки
@@ -12,7 +14,8 @@ public class Point {
      * @param y координата по оси ординат
      */
     public Point(double x, double y) {
-        throw new AssertionError();
+        this.x = x;
+        this.y = y;
     }
 
     /**
@@ -21,8 +24,7 @@ public Point(double x, double y) {
      * @return координату точки по оси X
      */
     public double getX() {
-        // TODO: реализовать
-        throw new AssertionError();
+        return x;
     }
 
     /**
@@ -31,8 +33,7 @@ public double getX() {
      * @return координату точки по оси Y
      */
     public double getY() {
-        // TODO: реализовать
-        throw new AssertionError();
+        return y;
     }
 
     /**
@@ -42,8 +43,6 @@ public double getY() {
      * @return расстояние от текущей точки до переданной
      */
     public double getLength(Point point) {
-        // TODO: реализовать
-        throw new AssertionError();
+        return Math.sqrt((point.x - x) * (point.x - x) + (point.y - y) * (point.y - y));
     }
-
 }

task05/src/com/example/task05/PolygonalLine.java

@@ -1,17 +1,21 @@
 package com.example.task05;
+import java.util.ArrayList;
 
 /**
  * Ломаная линия
  */
 public class PolygonalLine {
+    private final ArrayList<Point> line = new ArrayList<>();
 
     /**
      * Устанавливает точки ломаной линии
      *
      * @param points массив точек, которыми нужно проинициализировать ломаную линию
      */
     public void setPoints(Point[] points) {
-        // TODO: реализовать
+        for (Point point: points) {
+            addPoint(point);
+        }
     }
 
     /**
@@ -20,7 +24,7 @@ public void setPoints(Point[] points) {
      * @param point точка, которую нужно добавить к ломаной
      */
     public void addPoint(Point point) {
-        // TODO: реализовать
+        line.add(new Point(point.getX(), point.getY()));
     }
 
     /**
@@ -30,7 +34,7 @@ public void addPoint(Point point) {
      * @param y координата по оси ординат
      */
     public void addPoint(double x, double y) {
-        // TODO: реализовать
+        line.add(new Point(x, y));
     }
 
     /**
@@ -39,8 +43,13 @@ public void addPoint(double x, double y) {
      * @return длину ломаной линии
      */
     public double getLength() {
-        // TODO: реализовать
-        throw new AssertionError();
+        double length = 0;
+        for (int i = 0; i < line.size() - 1; i++) {
+            Point this_p = line.get(i);
+            Point next_p = line.get(i + 1);
+            length += this_p.getLength(next_p);
+        }
+        return length;
     }
 
 }