first part of lab 8

src/lab8_tableaux/Seat.java

@@ -0,0 +1,19 @@
+package lab8_tableaux;
+
+public class Seat {
+    public boolean busy;
+    private char row;
+    private int column;
+
+    Seat(char row, int column){
+        this.row = row;
+        this.column = column;
+    }
+
+    public String getPlace(){
+        String s = "";
+        s += this.column;
+        s += this.row;
+        return s;
+    }
+}

src/lab8_tableaux/Task0.java

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+package lab8_tableaux;
+
+public class Task0 {
+    public static void main(String[] args) {
+        int[] foo = even_array(5);
+        for (int i = 0; i < foo.length; i++) {
+            System.out.println(foo[i]);
+        }
+
+    }
+
+    public static int[] even_array(int n){
+        int[] foo = new int[n];
+        for (int i = 0; i < foo.length; i++) {
+            foo[i] = i*2;
+        }
+        return foo;
+    }
+}

src/lab8_tableaux/Task1.java

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+package lab8_tableaux;
+
+public class Task1 {
+    public static void main(String[] args) {
+        Seat mySeat = new Seat('a', 7);
+        System.out.println(mySeat.busy);
+    }
+}

src/lab8_tableaux/Theater.java

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+package lab8_tableaux;
+
+public class Theater {
+    private Seat[][] seats;
+
+    Theater(int r, int c){
+        seats = new Seat[c][r];
+        for (int i = 1; i <= c; i++) {
+            for (char j = 'A'; j < 'A'+r; j++) {
+                seats[i-1][j-'A'] = new Seat(j,i);
+            }
+        }
+    }
+
+    public String getSeat(int row, int column){
+        return seats[column][row].getPlace();
+    }
+
+    public boolean isSeatBusy (int row, int column){
+        return seats[column][row].busy;
+    }
+
+    public boolean occupySeat(int row, int column) {
+        if (isSeatBusy(row, column)) {
+            return false;
+        }
+        seats[column][row].busy = true;
+        return true;
+    }
+
+    private int numberOfBusySeats(){
+        int total =0 ;
+        int r = seats[0].length;
+        int c = seats.length;
+        for (int i = 0; i < r; i++) {
+            for (int j = 0; j < c; j++) {
+                if(isSeatBusy(i, j)){
+                    total++;
+                }
+            }
+        }
+        return total;
+    }
+
+    private int numberOfSeats(){
+        int total =0 ;
+        int r = seats[0].length;
+        int c = seats.length;
+        for (int i = 0; i < r; i++) {
+            for (int j = 0; j < c; j++) {
+                total++;
+            }
+        }
+        return total;
+    }
+
+    public String occupation() {
+        String s = "";
+        s += "Theater occupation: ";
+        s += numberOfBusySeats();
+        s += " / ";
+        s += numberOfSeats();
+        return s;
+    }
+
+    public String toString(){
+        String s = "";
+        s += "Theater seats occupation:";
+        s += "\n";
+        s += "\n";
+        s += " ";
+        int r = seats[0].length;
+        int c = seats.length;
+        System.out.println(c + "x" + r);
+        for (int i = 0; i < c; i++) {
+            s += " ";
+            s += i;
+        }
+        s += "\n";
+        for (int i = 0; i < r; i++) {
+            s += i;
+            s += " ";
+            for (int j = 0; j < c; j++) {
+                if (isSeatBusy(i, j)) {
+                    s += "X";
+                } else {
+                    s += " ";
+                }
+                s += space(j);
+            }
+            s += "\n";
+        }
+        return s;
+    }
+
+    private String space (int i){
+        String s = "";
+        int length = String.valueOf(i).length();
+        for (int j = 0; j < length; j++) {
+            s += " ";
+        }
+        return s;
+    }
+}

src/lab8_tableaux/TheaterApplication.java

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+package lab8_tableaux;
+
+
+public class TheaterApplication {
+    public static void main(String[] args) {
+        Theater cinema = new Theater(10, 20);
+        cinema.occupySeat(2, 1);
+        cinema.occupySeat(2, 3);
+        cinema.occupySeat(2, 5);
+        cinema.occupySeat(2, 8);
+        cinema.occupySeat(0, 1);
+        cinema.occupySeat(0, 3);
+        cinema.occupySeat(0, 5);
+        cinema.occupySeat(0, 8);
+        cinema.occupySeat(0, 9);
+        cinema.occupySeat(0, 10);
+        cinema.occupySeat(0, 11);
+        cinema.occupySeat(0, 13);
+        cinema.occupySeat(0, 15);
+        cinema.occupySeat(0, 18);
+        System.out.println(cinema);
+        System.out.println(cinema.occupation());
+    }
+}