Implement utility functions for sequences and dictionaries

Week03/sequences_emrah_tunc.py

@@ -0,0 +1,27 @@
+def remove_duplicates(seq: list) -> list:
+    new_list = []  
+
+    for value in seq:       
+        if value not in new_list:
+            new_list.append(value)
+
+    return new_list
+
+def list_counts(seq: list) -> dict:
+    counter = {}    
+    for element in seq:
+        if element in counter:
+           counter[element] = counter[element] + 1
+
+        else:
+           counter[element] = 1
+
+    return counter
+
+def reverse_dict(d: dict) -> dict:
+    reversed_d = {}
+
+        for key, value in d.items():
+            reversed_d[value] = key
+
+    return reversed_d