diff --git a/src/sorting/bubble_sort.py b/src/sorting/bubble_sort.py
index 05c97e4..c5a6037 100644
--- a/src/sorting/bubble_sort.py
+++ b/src/sorting/bubble_sort.py
@@ -8,13 +8,26 @@
 2 3 1 4
 2 1 3 4
 1 2 3 4
+>>> sys.stdin = io.StringIO(chr(10).join(['4','1 2 3 4']))  # input
+>>> bubble_sort()
+0
 """
 
 def bubble_sort():
-    n = input()
+    n = int(input())
     inp_string = input()
     str_lst = inp_string.split(" ")
-    print(str_lst)
+    int_lst = list(map(int, str_lst))
+    changes_count = 0
+    for i in range(n-1):
+        for j in range(n-1-i):
+            if int_lst[j] > int_lst[j+1]:
+                int_lst[j],int_lst[j+1] = (int_lst[j+1],int_lst[j])
+                changes_count += 1
+                print(" ".join(map(str, int_lst)))  
+    if changes_count == 0: 
+        print(0)
+    
 
 if __name__ == "__main__":
     import doctest
diff --git a/src/sorting/fast_hoare_sort.py b/src/sorting/fast_hoare_sort.py
new file mode 100644
index 0000000..b57a188
--- /dev/null
+++ b/src/sorting/fast_hoare_sort.py
@@ -0,0 +1,28 @@
+"""
+>>> import io, sys
+>>> sys.stdin = io.StringIO(chr(10).join([\
+'5',\
+'5 4 3 2 1'\
+]))
+>>> hoare_sort()
+1 2 3 4 5
+"""
+
+def hoare_sort():
+    n = int(input())
+    inp_string = input()
+    input_array = list(map(int, inp_string.split(" ")))
+    
+    counter = 1
+    while counter < len(input_array):
+        for i in range(len(input_array) - counter):
+            if input_array[i] > input_array[i + 1]:
+                input_array[i], input_array[i + 1] = input_array[i + 1], input_array[i]
+            
+        counter += 1
+            
+    print(input_array)
+
+if __name__ == "__main__":
+    import doctest
+    doctest.testmod(verbose=True)