diff --git a/src/main/java/ru/code/eight/RemoveDuplicates.java b/src/main/java/ru/code/eight/RemoveDuplicates.java
new file mode 100644
index 0000000..8abd9b9
--- /dev/null
+++ b/src/main/java/ru/code/eight/RemoveDuplicates.java
@@ -0,0 +1,16 @@
+package ru.code.eight;
+
+
+public class RemoveDuplicates {
+    public static int removeDuplicates(int[] a) {
+        int result = 0;
+        for (int i = 0; i < a.length; i++) {
+            if (a[i] != a[result]) {
+                result++;
+                a[result] = a[i];
+            }
+        }
+        return result + 1;
+
+    }
+}
diff --git a/src/test/java/ru/code/eight/RemoveDuplicatesTest.java b/src/test/java/ru/code/eight/RemoveDuplicatesTest.java
new file mode 100644
index 0000000..e6a542c
--- /dev/null
+++ b/src/test/java/ru/code/eight/RemoveDuplicatesTest.java
@@ -0,0 +1,12 @@
+package ru.code.eight;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class RemoveDuplicatesTest {
+    @Test
+    void removeDuplicates() {
+        assertThat(5).isEqualTo(RemoveDuplicates.removeDuplicates(new int[]{0, 0, 1, 1, 1, 2, 2, 3, 3, 4}));
+    }
+}
\ No newline at end of file