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Add functions for removing duplicates and counting #370

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Add functions for removing duplicates and counting #370

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dc492dc
Add functions for removing duplicates and counting
elifyalvac Nov 18, 2025
7f34692
Change duplicate removal method to use set
elifyalvac Nov 18, 2025
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15 changes: 15 additions & 0 deletions Week03/sequences_elif_yalvac.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
def remove_duplicates(seq: list) -> list:
return list(set(seq))


def list_counts(seq: list) -> dict:
from collections import Counter
return dict(Counter(seq))


def reverse_dict(d: dict) -> dict:
from collections import defaultdict
rev = defaultdict(list)
for k, v in d.items():
rev[v].append(k)
return dict(rev)