diff --git a/searches/binary_search.py b/searches/binary_search.py
index bec87b3c5aec..6907eda477b8 100644
--- a/searches/binary_search.py
+++ b/searches/binary_search.py
@@ -196,22 +196,28 @@ def binary_search(sorted_collection: list[int], item: int) -> int:
     1
     >>> binary_search([0, 5, 7, 10, 15], 6)
     -1
+    >>> binary_search([1, 2, 2, 2, 3], 2)
+    1
+    >>> binary_search([1, 1, 1, 2, 3], 1)
+    0
     """
     if any(a > b for a, b in pairwise(sorted_collection)):
         raise ValueError("sorted_collection must be sorted in ascending order")
     left = 0
     right = len(sorted_collection) - 1
+    result = -1
 
     while left <= right:
         midpoint = left + (right - left) // 2
         current_item = sorted_collection[midpoint]
         if current_item == item:
-            return midpoint
+            result = midpoint
+            right = midpoint - 1
         elif item < current_item:
             right = midpoint - 1
         else:
             left = midpoint + 1
-    return -1
+    return result
 
 
 def binary_search_std_lib(sorted_collection: list[int], item: int) -> int:
diff --git a/strings/split.py b/strings/split.py
index ed194ec69c2f..60b6a88ac700 100644
--- a/strings/split.py
+++ b/strings/split.py
@@ -17,17 +17,31 @@ def split(string: str, separator: str = " ") -> list:
 
     >>> split(";abbb;;c;", separator=';')
     ['', 'abbb', '', 'c', '']
+
+    >>> split("a--b--c", separator="--")
+    ['a', 'b', 'c']
+
+    >>> split("apple##banana##cherry", separator="##")
+    ['apple', 'banana', 'cherry']
     """
 
     split_words = []
+    separator_length = len(separator)
+
+    if separator_length == 0:
+        return [string]
 
     last_index = 0
-    for index, char in enumerate(string):
-        if char == separator:
+    index = 0
+    while index < len(string):
+        if string[index : index + separator_length] == separator:
             split_words.append(string[last_index:index])
-            last_index = index + 1
-        if index + 1 == len(string):
-            split_words.append(string[last_index : index + 1])
+            last_index = index + separator_length
+            index += separator_length
+        else:
+            index += 1
+
+    split_words.append(string[last_index:])
     return split_words