From 5427e117bd46b72da97d7bc3fe413fb86d9d0c26 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sefa=20Sa=C4=9F=C4=B1rl=C4=B1?= <sefa24sagirli@gmail.com>
Date: Sat, 7 Nov 2026 00:50:35 +0300
Subject: [PATCH] =?UTF-8?q?Week03:=20pyramid=20ve=20sequences=20=C3=B6devl?=
 =?UTF-8?q?eri=20eklendi?=
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---
 Week03/pyramid_sefa_sagirli.py   | 10 ++++++++++
 Week03/sequences_sefa_sagirli.py | 20 ++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 Week03/pyramid_sefa_sagirli.py
 create mode 100644 Week03/sequences_sefa_sagirli.py

diff --git a/Week03/pyramid_sefa_sagirli.py b/Week03/pyramid_sefa_sagirli.py
new file mode 100644
index 00000000..6807d1f3
--- /dev/null
+++ b/Week03/pyramid_sefa_sagirli.py
@@ -0,0 +1,10 @@
+def calculate_pyramid_height(number_of_blocks):
+    """Return the height of the pyramid that can be built with the given blocks.
+
+    Each level i needs i blocks (1 on top, 2 below it, and so on).
+    """
+    height = 0
+    while number_of_blocks >= height + 1:
+        height += 1
+        number_of_blocks -= height
+    return height
diff --git a/Week03/sequences_sefa_sagirli.py b/Week03/sequences_sefa_sagirli.py
new file mode 100644
index 00000000..11610b4c
--- /dev/null
+++ b/Week03/sequences_sefa_sagirli.py
@@ -0,0 +1,20 @@
+def remove_duplicates(seq: list) -> list:
+    """Return a new list without duplicates, keeping the original order."""
+    result = []
+    for item in seq:
+        if item not in result:
+            result.append(item)
+    return result
+
+
+def list_counts(seq: list) -> dict:
+    """Return a dictionary with the number of occurrences of each item."""
+    counts = {}
+    for item in seq:
+        counts[item] = counts.get(item, 0) + 1
+    return counts
+
+
+def reverse_dict(d: dict) -> dict:
+    """Return a dictionary with keys and values swapped."""
+    return {value: key for key, value in d.items()}