add lab3

src/Lab2.java

@@ -95,16 +95,23 @@ public class Lab2 {
 //                System.exit(0);
             }
         }
-//        todo check repetition of minimal elements
         int sum = 0;
         for (int j = 0; j < MATRIX_C[0].length; j++) {
             int tmpSmallest = MATRIX_C[0][j];
+            boolean valueRepeats = false;
             for (int i = 1; i < MATRIX_C.length; i++) {
                 if (MATRIX_C[i][j] < tmpSmallest) {
                     tmpSmallest = MATRIX_C[i][j];
+                    valueRepeats = false;
+                } else if (MATRIX_C[i][j] == tmpSmallest) {
+                    valueRepeats = true;
                 }
             }
             sum += tmpSmallest;
+
+            if (!valueRepeats) {
+                sum += tmpSmallest;
+            }
         }
         return sum;
     }

src/Lab3.java

@@ -0,0 +1,26 @@
+public class Lab3 {
+    public static void main(String[] args) {
+        String s = "ASD";
+        String s2 = s;
+        System.out.println("s2 = " + s2);
+        System.out.println(s == s2); // true?
+        System.out.println(s.equals(s2)); // true?
+        s += "B";
+        System.out.println(s);
+        System.out.println("s2 = " + s2);
+
+        System.out.println(s == s2); // false?
+        System.out.println(s.equals(s2)); // false?
+
+        String s3 = new String("ASD");
+        System.out.println(s3 == s2); // true? (false)
+        System.out.println(s3.equals(s2)); // false? (true)
+
+//      String Pool
+        String s4 = "ASD";
+        System.out.println(s4 == s2); // true?
+        System.out.println(s4.equals(s2)); // (true)
+
+        System.out.println("Done!");
+    }
+}