Add functions to manipulate lists and dictionaries

Author: kdraltntas

Week03/sequences_recepkadir_altıntaş.py

@@ -0,0 +1,20 @@
+def remove_duplicates(seq: list) -> list:
+    return list(dict.fromkeys(seq))
+
+def list_counts(seq: list) -> dict:
+    counts = {}
+    for item in seq:
+        counts[item] = counts.get(item, 0) + 1
+    return counts
+
+def reverse_dict(d: dict) -> dict:
+    return {value: key for key, value in d.items()}
+
+sample_list = [1, 2, 2, 3, 4, 4, 5]
+sample_dict = {'a': 1, 'b': 2, 'c': 3}
+
+print("Original list:", sample_list)
+print("List after removing duplicates:", remove_duplicates(sample_list))
+print("Counts of each element in the list:", list_counts(sample_list))
+print("Original dictionary:", sample_dict)
+print("Reversed dictionary:", reverse_dict(sample_dict))