.gitignore

@@ -1,3 +0,0 @@
-Java/Lab 1/Lab_1.class
-.gitignore
-Java/Lab 2/Lab_2.class

Java/Lab 1/Lab_1.java

@@ -1,38 +1,63 @@
 import java.util.Scanner;
 
 public class Lab_1 {
-
-    public static int protectedInput(String variable_to_read, Scanner input) {
-        int read_variable;
-        do {
-            try {
-                System.out.printf("Enter %s: ", variable_to_read);
-                read_variable = input.nextInt();
-                break;
-            } catch (Exception e) {
-                System.out.printf("%s must be an integer.\n", variable_to_read.toUpperCase());
-                input.nextLine();
-            }
-        } while (true);
-        return read_variable;
-    }
-
     public static void main(String[] args) {
         int n, m, a, b;
+        float s = 0;
 
         Scanner input = new Scanner(System.in);
         
-        n = protectedInput("n", input);
+        do {
+            try {
+                System.out.print("Enter n: ");
+                n = input.nextInt();
+                break;
+            } catch (Exception e) {
+                System.out.println("N must be an integer.");
+                input.nextLine();
+            }
+        } while (true);
 
-        m = protectedInput("m", input);
+        do {
+            try {
+                System.out.print("Enter m: ");
+                m = input.nextInt();
+                break;
+            } catch (Exception e) {
+                System.out.println("M must be an integer.");
+                input.nextLine();
+            }
+        } while (true);
 
-        a = protectedInput("a", input);
+        do {
+            try {
+                System.out.print("Enter a: ");
+                a = input.nextInt();
+                break;
+            } catch (Exception e) {
+                System.out.println("A must be an integer.");
+                input.nextLine();
+            }
+        } while (true);
 
-        b = protectedInput("b", input);
+        do {
+            try {
+                System.out.print("Enter b: ");
+                b = input.nextInt();
+                break;
+            } catch (Exception e) {
+                System.out.println("B must be an integer.");
+                input.nextLine();
+            }
+        } while (true);
 
         input.close();
 
-        float s = ((float) (b + m) / 2) * (m - b + 1) * (n - a + 1);
+        for (int i = a; i <= n; i++) {
+            for (int j = b; j <= m; j++) {
+                s += j;
+            }
+        }
 
         System.out.println("S = " + s);
     }

Java/Lab 2/Lab_2.java

@@ -2,25 +2,6 @@ import java.util.Scanner;
 
 public class Lab_2 {
 
-    public static short protectedInput(String inputPrompt, String errorMessage, Scanner input) {
-        short read_variable;
-
-        do {
-            try {
-                System.out.println();
-                System.out.print(inputPrompt);
-
-                read_variable = input.nextShort();
-                break;
-            } catch (Exception e) {
-                System.out.println(errorMessage);
-                input.nextLine();
-            }
-        } while (true);
-
-        return read_variable;
-    }
-
     public static String format(int number) {
         int width = String.valueOf(number).length() + 1;
         String format = "|%" + width + "d ";
@@ -46,24 +27,42 @@ public class Lab_2 {
         
         Scanner input = new Scanner(System.in);
 
-        a = protectedInput("Input a constant to multipy a matrix by: ",
-                "A constant must be a short-data type integer, try again.", input);
+        do {
+            try {
+                System.out.println();
+                System.out.print("Input a constant to multipy a matrix by: ");
+
+                a = input.nextShort();
+                break;
+            } catch (Exception e) {
+                System.out.println("A constant must be a short-data type integer, try again.");
+                input.nextLine();
+            }
+        } while (true);
 
         System.out.println();
         System.out.println("Input size of the matrix.");
 
         do {
-            rows = protectedInput("Rows: ",
-                    "A number of rows must be a short-data type integer, try again.", input);
+            try {
+                System.out.print("Rows: ");
+                rows = input.nextShort();
+            } catch (Exception e) {
+                System.out.println("A number of rows must be a short-data type integer, try again.");
+                input.nextLine();
+            }
         } while (rows <= 0);
 
         do {
-            columns = protectedInput("Columns: ",
-                    "A number of columns must be a short-data type integer, try again.", input);
+            try {
+                System.out.print("Columns: ");
+                columns = input.nextShort();
+            } catch (Exception e) {
+                System.out.println("A number of columns must be a short-data type integer, try again.");
+                input.nextLine();
+            }
         } while (columns <= 0);
 
-        input.close();
-
         short[][] matrix_B = new short[rows][columns];
 
         System.out.println();
@@ -86,8 +85,8 @@ public class Lab_2 {
 
         format = format(rows * columns * a);
 
-        for (short i = 0; i < matrix_B.length; i++) {
-            for (short j = 0; j < matrix_B[i].length; j++) {
+        for (short i = 0; i < rows; i++) {
+            for (short j = 0; j < columns; j++) {
                 matrix_B[i][j] *= (short) (a);
 
                 System.out.printf(format, matrix_B[i][j]);
@@ -102,5 +101,7 @@ public class Lab_2 {
         for (short[] row : matrix_B) {
             System.out.println(average(row));
         }
+
+        input.close();
     }
 }

Rust/Lab 2/Lab_2.rs

@@ -1,3 +0,0 @@
-fn main() {
-    
-}