diff --git a/src/Lab1.java b/src/Lab1.java
deleted file mode 100644
index 6e7403c..0000000
--- a/src/Lab1.java
+++ /dev/null
@@ -1,58 +0,0 @@
-public class Lab1 {
-    public static void main(String[] args) {
-//        char c = 'a' + '1';
-        char c = 97;
-//        char c = '1';
-        System.out.println(c);
-        System.out.println((int) c);
-        c++;
-        System.out.println(c);
-        System.out.println((int) c);
-        System.out.println((double)'1'/'3');
-
-//        System.out.println( (double) 0 / 0 );
-//        System.out.println( Math.sqrt(-1) );
-        double s = 0;
-        /*for (int i = 1; i <= 3; i++) { // 1) ��������� � i = 1, 2) ���� � <= 3, 3) �������� 䳿 � �� �����,
-            System.out.println(i);     // 4) �������������� � �� 1, 5) ����������� �� ����� 2
-//            s = s + i;
-            s += i;
-        }*/
-        /*int[] array = new int[2];
-        for (int i = 0; i < array.length; i++) {
-
-        }*/
-        final int A = -3;
-        final int B = 0;
-        final int N = 2;
-        final int M = 2;
-
-        final int C = 1;
-//        boolean wasDivisionByZero = false;
-//        todo char
-//        todo[clear code] think about avoiding brackets
-        if ((A <= -C && -C <= N) || (B <= 0 && 0 <= M)) {
-            System.out.println("Division by zero!");
-            return;
-        }
-/*myLabel:*/for (int i = A; i <= N /*&& !wasDivisionByZero*/; i++) {
-            /*if (i + C == 0) { // todo optimize
-                System.out.println("Division by zero!");
-                wasDivisionByZero = true;
-                break; //todo flag vs return;
-            }*/
-            for (int j = B; j <= M; j++) {
-                /*if (j == 0) {
-                    System.out.println("Division by zero!");
-                    return;
-//                    wasDivisionByZero = true;
-//                    break myLabel;
-                }*/
-                s += (double) (i / j) / (i + C);
-            }
-        }
-//        if (!wasDivisionByZero) {
-            System.out.println("s = " + s);
-//        }
-    }
-}
diff --git a/src/Lab2.java b/src/Lab2.java
deleted file mode 100644
index 473907c..0000000
--- a/src/Lab2.java
+++ /dev/null
@@ -1,26 +0,0 @@
-public class Lab2 {
-    public static void main(String[] args) {
-        int[] array = {1, 2, 3};
-        /*for (int i = 0; i < array.length; i++) {
-            if (i % 2 == 0) {
-                System.out.println("!" + array[i]);
-            } else {
-                System.out.println("?" + array[i]);
-            }
-        }*/
-
-        for (int i = 0; i < array.length; i+=2) {
-            System.out.println("!" + array[i]);
-        }
-
-        for (int i = 1; i < array.length; i+=2) {
-            System.out.println("?" + array[i]);
-        }
-
-//        зубчасті матриці
-        int[][] matrix = {
-                {1, 2},
-                {3}
-        };
-    }
-}
diff --git a/src/lab2.java b/src/lab2.java
new file mode 100644
index 0000000..4d02efd
--- /dev/null
+++ b/src/lab2.java
@@ -0,0 +1,51 @@
+public class lab2 {
+    public static void main(String[] args){
+
+        // 2131 % 7 = 3; C7 = int
+
+        int[][] matrix = {
+                {1,2,3,4,5},
+                {1,3,5,7,9},
+                {10,1,20,2,5}
+        };
+
+        int rows = matrix.length;
+        int column = matrix[0].length;
+        System.out.println("Матриця:");
+        for(int i = 0; i < rows; i++){
+            for (int j = 0; j < column; j++){
+                System.out.print(matrix[i][j]+" ");
+            }
+            System.out.println();
+        }
+        System.out.println();
+        // 2131 % 5 = 1; C5 = транспортування;
+
+        int[][] transportMatrix = new int[column][rows];
+
+
+        for(int i = 0; i < rows; i++){
+             for(int j = 0; j < column; j++){
+                 transportMatrix[j][i] = matrix[i][j];
+             }
+        }
+        System.out.println("Транспонована матриця:");
+        for (int i = 0; i < column; i++){
+            for (int j = 0; j < rows; j++){
+                System.out.print(transportMatrix[i][j]+" ");
+            }
+            System.out.println();
+        }
+        System.out.println();
+
+        // 2131 % 11 = 8; C11 = Знайти середнє значення елементів кожного рядка матриці;
+        int sum;
+        for(int i = 0; i < rows; i++){
+            sum = 0;
+            for(int j = 0; j < column; j++){
+                sum += matrix[i][j];
+            }
+            System.out.println("Середнє арифметичне " + (i+1) + " строки = " + (float)sum/column);
+        }
+    }
+}