From 6468241c495f346d6b5409c6ec1ff8c2413bdd37 Mon Sep 17 00:00:00 2001
From: Egor Starikov <egor.starikov2007@gmail.com>
Date: Fri, 7 Nov 2025 16:18:37 +0300
Subject: [PATCH 01/10] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB?=
 =?UTF-8?q?=D0=B5=D0=BD=D0=B0=20=D0=BF=D1=80=D0=BE=D0=B2=D0=B5=D1=80=D0=BA?=
 =?UTF-8?q?=D0=B0=20=D0=BD=D0=B0=20=D0=BA=D0=BE=D0=BB=D0=B8=D1=87=D1=81?=
 =?UTF-8?q?=D0=B5=D1=82=D0=B2=D0=BE=20=D1=86=D0=B8=D1=84=D1=80,=20=D0=BE?=
 =?UTF-8?q?=D0=B1=D1=80=D0=B0=D0=B1=D0=BE=D1=82=D0=BA=D0=B0=20X/x=20=D0=B2?=
 =?UTF-8?q?=20=D0=BA=D0=B0=D1=87=D0=B5=D1=81=D1=82=D0=B2=D0=B5=20=D0=BA?=
 =?UTF-8?q?=D0=BE=D0=BD=D1=82=D1=80=D0=BE=D0=BB=D1=8C=D0=BD=D0=BE=D0=B3?=
 =?UTF-8?q?=D0=BE=20=D1=87=D0=B8=D1=81=D0=BB=D0=B0,=20=D0=B8=D1=81=D0=BF?=
 =?UTF-8?q?=D1=80=D0=B0=D0=B2=D0=BB=D0=B5=D0=BD=D0=B0=20=D0=BE=D1=88=D0=B8?=
 =?UTF-8?q?=D0=B1=D0=BA=D0=B0=20=D1=81=20=D0=BD=D0=B5=D0=BF=D1=80=D0=B0?=
 =?UTF-8?q?=D0=B2=D0=B8=D0=BB=D1=8C=D0=BD=D1=8B=D0=BC=20=D0=B2=D1=8B=D1=87?=
 =?UTF-8?q?=D0=B8=D1=81=D0=BB=D0=B5=D0=BD=D0=B8=D0=B5=D0=BC=20=D0=B2=D0=B7?=
 =?UTF-8?q?=D0=B2=D0=B5=D1=88=D0=B5=D0=BD=D0=BD=D0=BE=D0=B9=20=D1=81=D1=83?=
 =?UTF-8?q?=D0=BC=D0=BC=D1=8B?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/checksum.py | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/src/checksum.py b/src/checksum.py
index 74b4fb0..4503ac8 100644
--- a/src/checksum.py
+++ b/src/checksum.py
@@ -1,14 +1,26 @@
-def modulo11Checksum(ISBNNumber: str):
+def modulo11checksum(isbn_number: str):
 
-    digits = [int(char) for char in ISBNNumber if char.isdigit()]
+    digits = [int(char) for char in isbn_number if char.isdigit()]
 
-    checkDigit = digits[-1]
+    if len(digits) < 9:
+        return False
+
+    last_char = isbn_number[-1]
+    if last_char.upper() == 'X':
+        check_digit = 10
+    elif last_char.isdigit():
+        check_digit = digits[-1]
+    else:
+        return False
 
     total = 0
-    for i in range(len(digits) - 1):
-        weight = 10
+    for i in range(9):
+        weight = 10 - i
         digit = digits[i]
         total += digit * weight
 
-    checksum = total + checkDigit
+    checksum = total + check_digit
     return checksum % 11 == 0
+
+
+

From 036d2248bfbd1737dbd904909e457f47660946d9 Mon Sep 17 00:00:00 2001
From: Egor Starikov <egor.starikov2007@gmail.com>
Date: Fri, 7 Nov 2025 16:29:50 +0300
Subject: [PATCH 02/10] =?UTF-8?q?=D0=9A=D0=BE=D0=BD=D1=81=D0=BE=D0=BB?=
 =?UTF-8?q?=D1=8C=D0=BD=D0=B0=D1=8F=20=D1=83=D1=82=D0=B8=D0=BB=D0=B8=D1=82?=
 =?UTF-8?q?=D0=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/isbn.py | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 src/isbn.py

diff --git a/src/isbn.py b/src/isbn.py
new file mode 100644
index 0000000..f0c3ab8
--- /dev/null
+++ b/src/isbn.py
@@ -0,0 +1,13 @@
+from src.checksum import modulo11checksum
+
+print("Введите номер:")
+s = input()
+while True:
+    if modulo11checksum(s):
+        print("Все верно")
+    elif s == "-1":
+        break
+    else:
+        print("Что-то не так")
+    print("Введите номер:")
+    s = input()
\ No newline at end of file

From 52916ac22069fe2f0204143137d745015fadd81f Mon Sep 17 00:00:00 2001
From: Egor Starikov <egor.starikov2007@gmail.com>
Date: Fri, 7 Nov 2025 16:38:55 +0300
Subject: [PATCH 03/10] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB?=
 =?UTF-8?q?=D0=B5=D0=BD=D0=B0=20=D1=83=D1=82=D0=B8=D0=BB=D0=B8=D1=82=D0=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/checksum.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/checksum.py b/src/checksum.py
index 4503ac8..6628803 100644
--- a/src/checksum.py
+++ b/src/checksum.py
@@ -22,5 +22,17 @@ def modulo11checksum(isbn_number: str):
     checksum = total + check_digit
     return checksum % 11 == 0
 
+print("Введите номер:")
+s = input()
+while True:
+    if modulo11checksum(s):
+        print("Все верно")
+    elif s == "-1":
+        break
+    else:
+        print("Что-то не так")
+    print("Введите номер:")
+    s = input()
+
 
 

From 83d498eaa2516b4fb6a760ebe78d45ce32e6c66b Mon Sep 17 00:00:00 2001
From: Egor Starikov <egor.starikov2007@gmail.com>
Date: Fri, 7 Nov 2025 16:40:29 +0300
Subject: [PATCH 04/10] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB?=
 =?UTF-8?q?=D0=B5=D0=BD=D0=B0=20=D0=BF=D1=80=D0=BE=D0=B2=D0=B5=D1=80=D0=BA?=
 =?UTF-8?q?=D0=B0=20=D0=BD=D0=B0=20=D0=BE=D1=81=D1=82=D0=BE=D1=80=D1=82?=
 =?UTF-8?q?=D0=B8=D1=80=D0=BE=D0=B2=D0=B0=D0=BD=D0=BD=D0=BE=D1=81=D1=82?=
 =?UTF-8?q?=D1=8C=20=D1=81=D0=BF=D0=B8=D1=81=D0=BA=D0=B0,=20=D0=B8=D1=81?=
 =?UTF-8?q?=D0=BF=D1=80=D0=B0=D0=B2=D0=BB=D0=B5=D0=BD=20=D0=B1=D0=B0=D0=B3?=
 =?UTF-8?q?=20left=20=3D=3D=20right=20(=D0=B8=D0=BD=D0=B0=D1=87=D0=B5=20?=
 =?UTF-8?q?=D0=BF=D1=80=D0=BE=D0=BF=D1=83=D1=81=D0=BA=D0=B0=D1=82=D0=B5?=
 =?UTF-8?q?=D1=81=D1=8F=20=D1=8D=D0=BB=D0=B5=D0=BC=D0=B5=D0=BD=D1=82)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/bin_search.py | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/bin_search.py b/src/bin_search.py
index 713abfc..1a5e43b 100644
--- a/src/bin_search.py
+++ b/src/bin_search.py
@@ -1,10 +1,13 @@
-def binSearch(xs: list[int], x: int):
+def bin_search(xs: list[int], x: int):
     left, right = 0, len(xs) - 1
-    while left < right:
+    for i in range(len(xs) - 1):
+	if xs[i] > xs[i + 1]:
+	    return -1
+    while left <= right:
         mid = (left + right) // 2
         if xs[mid] == x:
             return mid
-        if xs[mid] < x:
+        elif xs[mid] < x:
             left = mid + 1
         else:
             right = mid - 1

From ede34021d9a4031626e9ea050fd5dd4d9d79b86d Mon Sep 17 00:00:00 2001
From: Egor Starikov <egor.starikov2007@gmail.com>
Date: Fri, 7 Nov 2025 16:40:54 +0300
Subject: [PATCH 05/10] =?UTF-8?q?=D1=83=D0=B4=D0=B0=D0=BB=D0=B5=D0=BD=20?=
 =?UTF-8?q?=D1=84=D0=B0=D0=B9=D0=BB=20=D1=81=20=D1=83=D1=82=D0=B8=D0=BB?=
 =?UTF-8?q?=D0=B8=D1=82=D0=BE=D0=B9,=20=D1=82=D0=B5=D0=BF=D0=B5=D1=80?=
 =?UTF-8?q?=D1=8C=20=D0=BE=D0=BD=D0=B0=20=D0=B2=20=D1=81=D0=B0=D0=BC=D0=BE?=
 =?UTF-8?q?=D0=BC=20=D1=84=D0=B0=D0=B9=D0=BB=D0=B5=20=D1=81=20=D0=BF=D1=80?=
 =?UTF-8?q?=D0=BE=D0=B2=D0=B5=D1=80=D0=BA=D0=BE=D0=B9?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/isbn.py | 13 -------------
 1 file changed, 13 deletions(-)
 delete mode 100644 src/isbn.py

diff --git a/src/isbn.py b/src/isbn.py
deleted file mode 100644
index f0c3ab8..0000000
--- a/src/isbn.py
+++ /dev/null
@@ -1,13 +0,0 @@
-from src.checksum import modulo11checksum
-
-print("Введите номер:")
-s = input()
-while True:
-    if modulo11checksum(s):
-        print("Все верно")
-    elif s == "-1":
-        break
-    else:
-        print("Что-то не так")
-    print("Введите номер:")
-    s = input()
\ No newline at end of file

From 51b4d7a51bbfc07fdfb7b8e8edeff885bdcfb6e0 Mon Sep 17 00:00:00 2001
From: Egor Starikov <egor.starikov2007@gmail.com>
Date: Fri, 7 Nov 2025 16:52:59 +0300
Subject: [PATCH 06/10] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB?=
 =?UTF-8?q?=D0=B5=D0=BD=D1=8B=20=D1=82=D0=B5=D1=81=D1=82=D1=8B:=20=D0=B4?=
 =?UTF-8?q?=D0=BB=D1=8F=20=D0=B1=D0=B8=D0=BD=D0=BF=D0=BE=D0=B8=D1=81=D0=BA?=
 =?UTF-8?q?=D0=B0:=20=D0=BD=D0=B0=20=D0=BE=D1=82=D1=81=D0=BE=D1=80=D1=82?=
 =?UTF-8?q?=D0=B8=D1=80=D0=BE=D0=B2=D0=B0=D0=BD=D0=BD=D0=BE=D1=81=D1=82?=
 =?UTF-8?q?=D1=8C=20=D1=81=D0=BF=D0=B8=D1=81=D0=BA=D0=B0,=20=D1=81=D0=B5?=
 =?UTF-8?q?=D1=80=D0=B5=D0=B4=D0=B8=D0=BD=D0=BD=D1=8B=D0=B9=20=D1=8D=D0=BB?=
 =?UTF-8?q?=D0=B5=D0=BC=D0=B5=D0=BD=D1=82;=20=D0=B4=D0=BB=D1=8F=20isbn:=20?=
 =?UTF-8?q?=D0=BA=D0=BE=D1=80=D1=80=D0=B5=D0=BA=D1=82=D0=BD=D0=BE=D1=81?=
 =?UTF-8?q?=D1=82=D1=8C=20=D0=BF=D0=BE=D1=81=D0=BB=D0=B5=D0=B4=D0=BD=D0=B5?=
 =?UTF-8?q?=D0=B3=D0=BE=20=D1=8D=D0=BB=D0=B5=D0=BC=D0=B5=D0=BD=D1=82=D0=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 test/test_bin_searh.py | 11 +++++++----
 test/test_checksum.py  | 13 ++++++++++---
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/test/test_bin_searh.py b/test/test_bin_searh.py
index d18d85b..52b55d5 100644
--- a/test/test_bin_searh.py
+++ b/test/test_bin_searh.py
@@ -1,13 +1,16 @@
-from src.bin_search import binSearch
+from src.bin_search import bin_search
 
 
 def test_middle():
-    assert binSearch([1, 2, 3, 4, 5], 4) == 3
+    assert bin_search([1, 2, 3, 4, 5], 3) == 2
+
+def not_sorted_list():
+    assert bin_search([2, 4, 1, 3], 1) == -1
 
 
 def test_start():
-    assert binSearch([1, 2, 3, 4], 2) == 1
+    assert bin_search([1, 2, 3, 4], 2) == 1
 
 
 def test_not_in_list():
-    assert binSearch([1, 2, 3, 4], 5) == -1
+    assert bin_search([1, 2, 3, 4], 5) == -1
diff --git a/test/test_checksum.py b/test/test_checksum.py
index f64a64c..e3255e3 100644
--- a/test/test_checksum.py
+++ b/test/test_checksum.py
@@ -1,9 +1,16 @@
-from src.checksum import modulo11Checksum
+from src.checksum import modulo11checksum
 
 
 def test_good():
-    assert modulo11Checksum("2-266-11156-8")
+    assert modulo11checksum("2-266-11156-6")
 
 
 def test_bad():
-    assert not modulo11Checksum("2-266-11156-3")
+    assert not modulo11checksum("2-266-11156-3")
+
+def test_x():
+    assert modulo11checksum("0-8044-2957-X")
+
+def test_no_correct():
+    assert modulo11checksum("123456789Y")
+

From b0ef15f465b4f94a376f56a2858df757c2bf1d08 Mon Sep 17 00:00:00 2001
From: Egor Starikov <egor.starikov2007@gmail.com>
Date: Fri, 7 Nov 2025 16:54:45 +0300
Subject: [PATCH 07/10] =?UTF-8?q?=D0=B2=20readme=20=D0=B4=D0=BE=D0=B1?=
 =?UTF-8?q?=D0=B0=D0=B2=D0=BB=D0=B5=D0=BD=D1=8B=20=D0=B8=D0=BC=D1=8F=20?=
 =?UTF-8?q?=D1=84=D0=B0=D0=BC=D0=B8=D0=BB=D0=B8=D1=8F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .#README.md | 1 +
 1 file changed, 1 insertion(+)
 create mode 120000 .#README.md

diff --git a/.#README.md b/.#README.md
new file mode 120000
index 0000000..e5c525b
--- /dev/null
+++ b/.#README.md
@@ -0,0 +1 @@
+vboxuser@ubuntu-1.9865
\ No newline at end of file

From c2dab4cb6f6624efe7184f7ba864c5ed89939be4 Mon Sep 17 00:00:00 2001
From: Egor Starikov <egor.starikov2007@gmail.com>
Date: Fri, 7 Nov 2025 17:14:14 +0300
Subject: [PATCH 08/10] =?UTF-8?q?=D0=B8=D1=81=D0=BF=D1=80=D0=B0=D0=B2?=
 =?UTF-8?q?=D0=BB=D0=B5=D0=BD=D0=B0=20=D1=82=D0=B0=D0=B1=D1=83=D0=BB=D1=8F?=
 =?UTF-8?q?=D1=86=D0=B8=D1=8F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/bin_search.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/bin_search.py b/src/bin_search.py
index 1a5e43b..5c60ba9 100644
--- a/src/bin_search.py
+++ b/src/bin_search.py
@@ -1,8 +1,8 @@
 def bin_search(xs: list[int], x: int):
     left, right = 0, len(xs) - 1
     for i in range(len(xs) - 1):
-	if xs[i] > xs[i + 1]:
-	    return -1
+        if xs[i] > xs[i + 1]:
+            return -1
     while left <= right:
         mid = (left + right) // 2
         if xs[mid] == x:

From 031ca2010f2219c6945ebc205217bf2610e76b75 Mon Sep 17 00:00:00 2001
From: Egor Starikov <egor.starikov2007@gmail.com>
Date: Fri, 7 Nov 2025 17:14:57 +0300
Subject: [PATCH 09/10] =?UTF-8?q?=D0=B4=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB?=
 =?UTF-8?q?=D0=B5=D0=BD=20=D1=82=D0=B5=D1=81=D1=82=20=D0=BD=D0=B0=20=D0=B4?=
 =?UTF-8?q?=D0=BB=D0=B8=D0=BD=D1=83=20=D0=BA=D0=BE=D0=B4=D0=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 test/test_checksum.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/test/test_checksum.py b/test/test_checksum.py
index e3255e3..a25285a 100644
--- a/test/test_checksum.py
+++ b/test/test_checksum.py
@@ -12,5 +12,9 @@ def test_x():
     assert modulo11checksum("0-8044-2957-X")
 
 def test_no_correct():
-    assert modulo11checksum("123456789Y")
+    assert not modulo11checksum("123456789Y")
+
+def test_len():
+    assert not modulo11checksum("31231")
+
 

From 6ba9207269af57c8f28ad9aeeaecdbc0c8e4821e Mon Sep 17 00:00:00 2001
From: Egor Starikov <egor.starikov2007@gmail.com>
Date: Fri, 7 Nov 2025 17:15:54 +0300
Subject: [PATCH 10/10] =?UTF-8?q?=D0=92=20readme=20=D0=B4=D0=BE=D0=B1?=
 =?UTF-8?q?=D0=B0=D0=B2=D0=BB=D0=B5=D0=BD=D1=8B=20=D1=84=D0=B0=D0=BC=D0=B8?=
 =?UTF-8?q?=D0=BB=D0=B8=D1=8F,=20=D0=B8=D0=BC=D1=8F=20=D0=B8=20=D0=BD?=
 =?UTF-8?q?=D0=BE=D0=BC=D0=B5=D1=80=20=D0=B3=D1=80=D1=83=D0=BF=D0=BF=D1=8B?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .#README.md | 1 -
 README.md   | 1 +
 2 files changed, 1 insertion(+), 1 deletion(-)
 delete mode 120000 .#README.md

diff --git a/.#README.md b/.#README.md
deleted file mode 120000
index e5c525b..0000000
--- a/.#README.md
+++ /dev/null
@@ -1 +0,0 @@
-vboxuser@ubuntu-1.9865
\ No newline at end of file
diff --git a/README.md b/README.md
index e93444f..798a6fa 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+Стариков Егор, группа 142
 # Контрольная работа 1 (2 вариант)
 
 Темы: Git и GitHub, стандарты оформления кода, хорошие практики, тестирование.