diff --git a/lists/lists.py b/lists/lists.py
index 04d850f..7dcda2d 100644
--- a/lists/lists.py
+++ b/lists/lists.py
@@ -8,7 +8,30 @@ def replace(input_list: list[int]) -> list[int]:
         :param input_list: Исходный список
         :return: Список с замененными элементами
         """
-        pass
+
+        if input_list:
+            max_numb = input_list[0]
+            for value in input_list[1:]:
+                if value > max_numb:
+                    max_numb = value
+
+            for position, value in enumerate(input_list):
+                if value > 0:
+                    input_list[position] = max_numb
+
+        return input_list
+
+    @staticmethod
+    def binary_search(sorted_list: list[int], left: int, right: int, query: int) -> int:
+        if left > right:
+            return -1
+        mid = (left + right) // 2
+        if query == sorted_list[mid]:
+            return mid
+        elif query < sorted_list[mid]:
+            return int(ListExercise.binary_search(sorted_list, left, mid - 1, query))
+        else:
+            return int(ListExercise.binary_search(sorted_list, mid + 1, right, query))
 
     @staticmethod
     def search(input_list: list[int], query: int) -> int:
@@ -20,4 +43,10 @@ def search(input_list: list[int], query: int) -> int:
         :param query: Искомый элемент
         :return: Номер элемента
         """
-        pass
+        if input_list:
+            input_list.sort()
+            left, right = 0, len(input_list) - 1
+            index = ListExercise.binary_search(input_list, left, right, query)
+            return index
+        else:
+            return -1
diff --git a/lists/test_lists.py b/lists/test_lists.py
index 7da0c76..a8ac46c 100644
--- a/lists/test_lists.py
+++ b/lists/test_lists.py
@@ -1,10 +1,7 @@
-import pytest
-
 from .lists import ListExercise
 
 
 class TestListExercise:
-    @pytest.mark.skip(reason="ListExercise.replace is not implemented")
     def test_replace(self) -> None:
         input_list = [3, 2, -8, 4, 100, -6, 7, 8, -99]
         replaced_list = ListExercise.replace(input_list)
@@ -18,7 +15,6 @@ def test_replace(self) -> None:
         replaced_list = ListExercise.replace(input_list)
         assert replaced_list == []
 
-    @pytest.mark.skip(reason="ListExercise.search is not implemented")
     def test_search(self) -> None:
         assert ListExercise.search([1], 900) == -1
         assert ListExercise.search([1], 1) == 0