From a449de34138653a6e5bad7bb7f83974df878f286 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C4=B1za=20Arslan?=
 <70386445+ragg211@users.noreply.github.com>
Date: Sun, 24 May 2026 14:38:13 +0300
Subject: [PATCH 1/2] Add files via upload

---
 Week03/shifted_RIZA_ARSLAN.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 Week03/shifted_RIZA_ARSLAN.py

diff --git a/Week03/shifted_RIZA_ARSLAN.py b/Week03/shifted_RIZA_ARSLAN.py
new file mode 100644
index 00000000..cf0fdc8d
--- /dev/null
+++ b/Week03/shifted_RIZA_ARSLAN.py
@@ -0,0 +1,14 @@
+def shifted(data):
+    n = len(data)
+    if n == 0:
+        return 0.0
+        
+    ortalama = sum(data) / n
+    sirali = sorted(data)
+    medyan = (sirali[n // 2] + sirali[(n - 1) // 2]) / 2
+    
+    if ortalama == 0:
+        return 0.0
+        
+    yuzdelik_fark = (abs(ortalama - medyan) / abs(ortalama)) * 100
+    return yuzdelik_fark
\ No newline at end of file

From 3cbf44f937876f8bd4056366d500600dac38c00b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C4=B1za=20Arslan?=
 <70386445+ragg211@users.noreply.github.com>
Date: Sun, 24 May 2026 14:39:51 +0300
Subject: [PATCH 2/2] Refactor shifted function for efficiency and clarity

---
 Week03/shifted_RIZA_ARSLAN.py | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/Week03/shifted_RIZA_ARSLAN.py b/Week03/shifted_RIZA_ARSLAN.py
index cf0fdc8d..0bb4219d 100644
--- a/Week03/shifted_RIZA_ARSLAN.py
+++ b/Week03/shifted_RIZA_ARSLAN.py
@@ -1,14 +1,6 @@
 def shifted(data):
-    n = len(data)
-    if n == 0:
-        return 0.0
-        
-    ortalama = sum(data) / n
+    if not data or sum(data) == 0: return 0.0
+    ortalama = sum(data) / len(data)
     sirali = sorted(data)
-    medyan = (sirali[n // 2] + sirali[(n - 1) // 2]) / 2
-    
-    if ortalama == 0:
-        return 0.0
-        
-    yuzdelik_fark = (abs(ortalama - medyan) / abs(ortalama)) * 100
-    return yuzdelik_fark
\ No newline at end of file
+    medyan = (sirali[len(data) // 2] + sirali[~(len(data) // 2)]) / 2
+    return (abs(ortalama - medyan) / abs(ortalama)) * 100