Create sequences_dilek_celebi.py

Week03/sequences_dilek_celebi.py

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+def remove_duplicates(lst):
+    unique_items = []
+    for item in lst:
+        if item not in unique_items:
+            unique_items.append(item)
+    return unique_items
+
+
+def list_counts(lst):
+    frequency_dict = {}
+    for item in lst:
+        if item in frequency_dict:
+            frequency_dict[item] += 1
+        else:
+            frequency_dict[item] = 1
+    return frequency_dict
+
+
+def reverse_dict(d):
+    swapped_dict = {}
+    for key, value in d.items():
+        swapped_dict[value] = key
+    return swapped_dict