Python Program: Convert counter to list of unique Items

Last update on December 21 2024 07:29:18 (UTC/GMT +8 hours)

Write a Python program that creates a 'Counter' for a list of items and converts it to a list of unique items with their counts.

Sample Solution:

Code:

from collections import Counter

def main():
    items = ["Red", "Green", "Black", "Black", "Red", "red", "Orange", "Pink", "Pink", "Red", "White"]
    item_counter = Counter(items)
    
    unique_items_with_counts = list(item_counter.items())
    
    print("Original List:", items)
    print("Counter:", item_counter)
    print("Unique Items with Counts:", unique_items_with_counts)

if __name__ == "__main__":
    main()

Output:

Counter 1: Counter({'item2': 34, 'item3': 22, 'item1': 10})
Counter 2: Counter({'item2': 20, 'item1': 12, 'item3': 10})
Sum Counter: Counter({'item2': 54, 'item3': 32, 'item1': 22})

In the exercise above, the "Counter" class is used to create a counter for the list of items. The "items()" method of the 'Counter' object retrieves a list of distinct items along with their counts, which is then printed.

Flowchart:

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