Inversion count problem?

how will we know that we should apply divide and conquer ?

@mehulbhandari358 only by practising and being persistent (like when you solve no of question on a particular app ) also refer this
(https://www.quora.com/When-do-we-use-divide-and-conquer)

what do you mean by particular app ?

@mehulbhandari358 approach

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