added task #1089 soluition

Author: nesterrovv

src/task_1089/Solution.java

@@ -0,0 +1,28 @@
+package task_1089;
+
+import java.util.Arrays;
+
+class Solution {
+    public void duplicateZeros(int[] arr) {
+        int[] tmp = Arrays.copyOf(arr, arr.length);
+        int tmpIndex = 0;
+        for (int i = 0; i < tmp.length; i++) {
+            if (tmp[i] != 0) {
+                if (tmpIndex <= arr.length - 1) {
+                    arr[tmpIndex] = tmp[i];
+                    tmpIndex++;
+                }
+            } else {
+                if (tmpIndex <= arr.length - 2) {
+                    arr[tmpIndex] = tmp[i];
+                    arr[tmpIndex+1] = tmp[i];
+                    tmpIndex += 2;
+                } else if (tmpIndex <= arr.length - 1) {
+                    arr[tmpIndex] = tmp[i];
+                    tmpIndex++;
+                }
+            }
+        }
+    }
+
+}