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Implement utility functions for lists and dictionaries
Added functions to remove duplicates, count elements, and reverse a dictionary.
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def remove_duplicates(lst: list) -> list:
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"""
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Listeden tekrar eden elemanları kaldırır, sırayı korur.
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"""
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seen = []
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for item in lst:
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if item not in seen:
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seen.append(item)
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return seen
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def list_counts(lst: list) -> dict:
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"""
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Listedeki her elemanın kaç kez geçtiğini sayar.
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"""
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counts = {}
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for item in lst:
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if item in counts:
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counts[item] += 1
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else:
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counts[item] = 1
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return counts
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def reverse_dict(d: dict) -> dict:
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"""
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Sözlüğün anahtar ve değerlerini ters çevirir.
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Aynı değere sahip birden fazla anahtar varsa, son anahtarı tutar.
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"""
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reversed_d = {}
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for key, value in d.items():
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reversed_d[value] = key
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return reversed_d

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