Counter class in Python with Hackerrank solution (Raghu's shop) - Collections /Counter()

Описание

Topics covered:
1. What is Counter
2. elements()
3. most_common([n]
4. subtract([iterable-or-mapping])
5. Counter Question from Hackerank

Link -
https://drive.google.com/file/d/126ioG_PTkatYWpdxqkihD7V6gMJClSIz/view?usp=sharing

1. Dictionary Data structure-
https://youtu.be/k_WeoqmJcdE
2. Sorting in python-
https://youtu.be/uplNFlYPg_A
3. Defaultdict in python-
https://youtu.be/xEP9xlQPBrA

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