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Count Number of Nice Subarrays at Roblox

Medium74.8% acceptance

This problem has 75.0% frequency at Roblox.

Problem Description

Given an array of integers `nums` and an integer `k`. A continuous subarray is called **nice** if there are `k` odd numbers on it. Return _the number of**nice** sub-arrays_.

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Topics

ArrayHash TableMathSliding WindowPrefix Sum

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