diff --git a/src/main/java/ru/tn/courses/vmartinov/v3/task1/Subtask_1.java b/src/main/java/ru/tn/courses/vmartinov/v3/task1/Subtask_1.java
new file mode 100644
index 00000000..86e00a02
--- /dev/null
+++ b/src/main/java/ru/tn/courses/vmartinov/v3/task1/Subtask_1.java
@@ -0,0 +1,28 @@
+package ru.tn.courses.vmartinov.v3.task1;
+
+import java.util.Arrays;
+
+public class Subtask_1 {
+    public static void main(String[] args) {
+        int[] arrayNumbers = {0,0,0,1,-2, 3,-4, 5,-6,7};
+        for (int i = 0; i<arrayNumbers.length; i++){
+            System.out.print(arrayNumbers[i] + " ");
+        }
+        System.out.println("=================================");
+
+        for (int i = 0; i < arrayNumbers.length; i++)
+        {
+            if (arrayNumbers[i] == 0){
+                continue;
+            }
+            else if (arrayNumbers[i] > 0)
+            {
+                System.out.println("Первое число положительное");
+            }
+            else {
+                System.out.println("Перврое число отрицательное");
+            }
+            break;
+        }
+    }
+}
diff --git a/src/main/java/ru/tn/courses/vmartinov/v3/task1/Subtask_2.java b/src/main/java/ru/tn/courses/vmartinov/v3/task1/Subtask_2.java
new file mode 100644
index 00000000..e2044fb7
--- /dev/null
+++ b/src/main/java/ru/tn/courses/vmartinov/v3/task1/Subtask_2.java
@@ -0,0 +1,32 @@
+package ru.tn.courses.vmartinov.v3.task1;
+
+import java.util.Arrays;
+
+public class Subtask_2 {
+    public static void main(String[] args) {
+        int[] arrayNumbers = new int[10];
+        int[] lock = new int[]{0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+        int first_cube = 0;
+        int second_cube = 0;
+        for (int i = 0; i < arrayNumbers.length; i++) {
+            if (arrayNumbers[i] > 0) {
+                if (first_cube == 0)
+                    first_cube = i;
+                else
+                    second_cube = i;
+            }
+        }
+        int[] decrypt = new int[3];
+        decrypt[first_cube % 3] = arrayNumbers[first_cube];
+        if (arrayNumbers[first_cube] == arrayNumbers[second_cube])
+            decrypt[(first_cube + 1) % 3] = (10 - arrayNumbers[first_cube] - arrayNumbers[second_cube]) / 2;
+        else
+            decrypt[(first_cube  + 1) % 3] = arrayNumbers[second_cube];
+        decrypt[(first_cube + 2) % 3] = 10 - arrayNumbers[first_cube] - decrypt[(first_cube + 1) % 3];
+
+        for (int i = 0; i < lock.length; i++) {
+            lock[i] = decrypt[i % 3];
+        }
+        System.out.println(Arrays.toString(lock));
+    }
+}
diff --git a/src/main/java/ru/tn/courses/vmartinov/v3/task1/Subtask_3.java b/src/main/java/ru/tn/courses/vmartinov/v3/task1/Subtask_3.java
new file mode 100644
index 00000000..41be5417
--- /dev/null
+++ b/src/main/java/ru/tn/courses/vmartinov/v3/task1/Subtask_3.java
@@ -0,0 +1,24 @@
+package ru.tn.courses.vmartinov.v3.task1;
+
+public class Subtask_3 {
+    public static void main(String[] args)
+    {
+        int[] arrayNumbers = {12,9,4,25,84,48,74,100};
+        int count = 0;
+        for (int i = 0; i < arrayNumbers.length - 1; i++)
+            for (int j = 0; j < arrayNumbers.length - i - 1; j++)
+                if (arrayNumbers[j] > arrayNumbers[j+1])
+                {
+                    int temporary = arrayNumbers[j];
+                    arrayNumbers[j] = arrayNumbers[j+1];
+                    arrayNumbers[j+1] = temporary;
+                    count++;
+                }
+        System.out.println("Отсортированный массив:");
+        for(int i=0; i<arrayNumbers.length; i++){
+            System.out.print(arrayNumbers[i] + " ");
+        }
+        System.out.println("=================================");
+        System.out.println("Количество перестановок: "+ count);
+    }
+}