Add files via upload

lab1/Main.java

@@ -0,0 +1,32 @@
+package labs.lab1;
+
+import java.util.Scanner;
+
+/**
+ * Created by User on 09.04.2017.
+ */
+public class Main {
+    public static void main(String[] args) {
+        Scanner scanner=new Scanner(System.in);
+        short n=0;
+        System.out.printf("n=");
+        if (scanner.hasNextShort()){
+            n=scanner.nextShort();
+        }
+        short m=0;
+        System.out.printf("m=");
+        if (scanner.hasNextShort()){
+            m=scanner.nextShort();
+        }
+        float S=0f;
+        short C=0;
+        for (short i=0; i<=n; i++){
+            for (short j=0; j<=m; j++){
+                if (i-C!=0){
+                    S+=(float)(i+j)/(float)(i-C);
+                }
+            }
+        }
+        System.out.println("Sum="+S);
+    }
+}

lab2/Main.java

@@ -0,0 +1,89 @@
+package labs.lab2;
+/**
+ * Created by User on 09.04.2017.
+ */
+
+/**
+ * operation - direct sum
+ * type of elements - byte
+ * operation with C - find average value of each row of matrix
+ */
+
+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        //Input matrix A
+        int n = 0;
+        System.out.printf("Size of A[n x n]: ");
+        if (scanner.hasNextInt()) {
+            n = scanner.nextInt();
+        }
+        System.out.printf("Input elements of A:\n");
+        byte[][] A = new byte[n][n];
+
+        for (int i = 0; i < n; i++) {
+            for (int j = 0; j < n; j++) {
+                if (scanner.hasNextByte()) {
+                    A[i][j] = scanner.nextByte();
+                }
+            }
+        }
+        //Input matrix B
+        int m = 0;
+        System.out.printf("Size of B[m x m]: ");
+        if (scanner.hasNextInt()) {
+            m = scanner.nextInt();
+        }
+        System.out.printf("Input elements of B:\n");
+        byte[][] B = new byte[m][m];
+
+        for (int i = 0; i < m; i++) {
+            for (int j = 0; j < m; j++) {
+                if (scanner.hasNextByte()) {
+                    B[i][j] = scanner.nextByte();
+                }
+            }
+        }
+
+        //Calculate matrix
+        int k=n+m;
+        byte [][] C=new byte[k][k];
+        for (int i=0; i<k; i++){
+            for (int j=0; j<k; j++){
+                if (i<n){
+                    if (j<n){
+                        C[i][j]=A[i][j];
+                    } else{
+                        C[i][j]=0;
+                    }
+                } else{
+                    if (j>=n){
+                        C[i][j]=B[i-n][j-n];
+                    } else {
+                        C[i][j] = 0;
+                    }
+                }
+            }
+        }
+        //Output matrix C
+        System.out.printf("Matrix C:\n");
+        for(int i=0; i<k; i++){
+            for (int j=0; j<k; j++){
+                System.out.printf("%4d", C[i][j]);
+            }
+            System.out.printf("\n");
+        }
+
+        //Calculate average value fot each row
+        float sum;
+        for (int i=0; i<k; i++){
+            sum=0;
+            for (int j=0; j<k; j++){
+                sum+=C[i][j];
+            }
+            System.out.printf("Row %d   Average %.2f\n", i, (float)(sum/k));
+        }
+    }
+}

lab3/Main.java

@@ -0,0 +1,34 @@
+package labs.lab3;
+
+/**
+ * Created by User on 09.04.2017.
+ */
+public class Main {
+    public static void main(String[] args) {
+        StringBuilder text = new StringBuilder("Some text. Some more text. And a little more text.");
+        StringBuilder sentence;
+        StringBuilder newtext = new StringBuilder("");
+        StringBuilder word1;
+        StringBuilder word2;
+        int next = text.indexOf(".");
+        int prev = -1;
+        while (next != -1) {
+            sentence = new StringBuilder(text.subSequence(prev + 1, next));
+            if (sentence.charAt(0) == ' ') {
+                sentence = new StringBuilder(sentence.substring(1));
+            }
+            word1 = new StringBuilder(sentence.substring(0, sentence.indexOf(" ")));
+            word2 = new StringBuilder(sentence.substring(sentence.lastIndexOf(" ") + 1, sentence.length()));
+            word2.replace(0, 1, word2.substring(0, 1).toUpperCase());
+            sentence.replace(0, sentence.indexOf(" "), word2.toString());
+            sentence.replace(sentence.lastIndexOf(" "), sentence.length(), " " + word1.toString());
+            newtext.append(sentence);
+            newtext.append(". ");
+            prev = next;
+            next = text.indexOf(".", next + 1);
+        }
+        System.out.println(text);
+        System.out.println(newtext);
+
+    }
+}

lab4/Char.java

@@ -0,0 +1,41 @@
+package labs.lab4;
+
+/**
+ * Created by User on 30.04.2017.
+ */
+public abstract class Char {
+    protected char ch;
+
+    abstract void print();
+
+    /**
+     * Перевіряє, чи є символ кінцем речення
+     */
+    boolean isEndOfSentence() {
+        return false;
+    }
+
+    /**
+     * Перевіряє, чи є символ пробілом
+     */
+    static boolean isWhitespace(char ch) {
+        return Character.isWhitespace(ch);
+    }
+
+    /**
+     * Перевіряє, чи є символ частиною слова
+     */
+    static boolean isLetterOrDigit(char ch) {
+        return Character.isLetterOrDigit(ch);
+    }
+
+    /**
+     * Перевіряє, чи є символ знаком пунктуації
+     */
+    static boolean isPunctuation(char ch) {
+        if (".,?!;:".indexOf(ch) != -1) {
+            return true;
+        }
+        return false;
+    }
+}

lab4/Letter.java

@@ -0,0 +1,20 @@
+package labs.lab4;
+
+/**
+ * Created by User on 30.04.2017.
+ */
+public class Letter extends Char {
+
+    Letter(){
+        ch=0;
+    }
+
+    Letter(char ch){
+        this.ch=ch;
+    }
+
+    @Override
+    public void print() {
+        System.out.print(ch);
+    }
+}

lab4/Main.java

@@ -0,0 +1,19 @@
+package labs.lab4;
+
+/**
+ * Created by User on 29.04.2017.
+ */
+public class Main {
+    public static void main(String[] args) {
+        String s = new String("Some, text. Some more; text? And a little: more text!..");
+        /**
+         * Створюєм ієрархію
+         */
+        Text text = new Text(s);
+        /**
+         * Завдання по варіанту
+         */
+        text.swap();
+        text.print();
+    }
+}

lab4/Punctuation.java

@@ -0,0 +1,38 @@
+package labs.lab4;
+
+/**
+ * Created by User on 03.05.2017.
+ */
+public class Punctuation extends Char {
+    /**
+     * Номер слова, після якого в реченні ставиться даний знак
+     */
+    int seqNumber;
+
+    Punctuation(char ch, int n) {
+        this.ch = ch;
+        seqNumber = n;
+    }
+
+    Punctuation(char ch) {
+        this.ch = ch;
+    }
+
+    public boolean isEndOfSentence() {
+        if (this != null && (ch == '.' || ch == '!' || ch == '?')) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Повертає номер слова, після якого в реченні ставиться даний знак
+     */
+    public int getSeqNumber() {
+        return seqNumber;
+    }
+
+    public void print() {
+        System.out.print(ch);
+    }
+}

lab4/Sentence.java

@@ -0,0 +1,51 @@
+package labs.lab4;
+
+import java.util.ArrayList;
+import java.util.Collections;
+
+/**
+ * Created by User on 30.04.2017.
+ */
+public class Sentence {
+    private ArrayList<Word> words;
+    private ArrayList<Punctuation> punctuations;
+
+    Sentence() {
+        words = new ArrayList<>();
+        punctuations = new ArrayList<>();
+    }
+
+    /**
+     * Додає слово в речення
+     */
+    public void addWord(Word w) {
+        words.add(w);
+    }
+
+    /**
+     * Додає знак пунктуації в речення
+     */
+    public void addPunctuation(char ch) {
+        punctuations.add(new Punctuation(ch, words.size() - 1));
+
+    }
+
+    public void print() {
+        int j = 0;
+        for (int i = 0; i < words.size(); i++) {
+            words.get(i).print();
+            while (j < punctuations.size() && punctuations.get(j).getSeqNumber() == i) {
+                punctuations.get(j).print();
+                j++;
+            }
+            System.out.print(' ');
+        }
+    }
+
+    /**
+     * Міняє місцями перше і останнє слово в реченні
+     */
+    public void swap() {
+        Collections.swap(words, 0, words.size() - 1);
+    }
+}