From be7856546a5c2f5eda5a2ca72f1db0a2845528c4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Heval=20S=C3=B6=C4=9F=C3=BCt?=
 <66115650+hevalsogut@users.noreply.github.com>
Date: Sun, 16 Nov 2025 11:41:07 +0300
Subject: [PATCH] Add functions to manipulate lists and dictionaries

---
 Week03/sequences_heval_sogut.py | 34 +++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 Week03/sequences_heval_sogut.py

diff --git a/Week03/sequences_heval_sogut.py b/Week03/sequences_heval_sogut.py
new file mode 100644
index 00000000..5befcb15
--- /dev/null
+++ b/Week03/sequences_heval_sogut.py
@@ -0,0 +1,34 @@
+def remove_duplicates(seq: list) -> list:
+    """
+    Remove duplicate elements from a list while preserving the original order.
+    Only the first occurrence of each element is kept.
+    """
+    seen = set()
+    result = []
+    for item in seq:
+        if item not in seen:
+            seen.add(item)
+            result.append(item)
+    return result
+
+
+def list_counts(seq: list) -> dict:
+    """
+    Count how many times each element appears in a list.
+    Returns a dictionary where keys are elements and values are counts.
+    """
+    counts = {}
+    for item in seq:
+        counts[item] = counts.get(item, 0) + 1
+    return counts
+
+
+def reverse_dict(d: dict) -> dict:
+    """
+    Reverse the keys and values of a dictionary.
+    If multiple keys have the same value, the last one overwrites the earlier ones.
+    """
+    reversed_dict = {}
+    for key, value in d.items():
+        reversed_dict[value] = key
+    return reversed_dict