#1248

Count Number of Nice Subarrays

pupil · 495 · lc medium +27 · verified · 74.8% accepted · 5,381 likes · top 85%

Description

You are given an integer array nums and an integer k. A contiguous subarray is called "nice" if it contains exactly k odd numbers.

Return the total count of nice subarrays.

Example 1:

Input: nums = [1,1,2,1,1], k = 3

Output: 2

Explanation: The only sub-arrays with 3 odd numbers are [1,1,2,1] and [1,2,1,1].

Example 2:

Input: nums = [2,4,6], k = 1

Output: 0

Explanation: There are no odd numbers in the array.

Example 3:

Input: nums = [2,2,2,1,2,2,1,2,2,2], k = 2

Output: 16

Code

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class Solution:
    def numberOfSubarrays(self, nums: List[int], k: int) -> int:

class Solution:
    def numberOfSubarrays(self, nums: List[int], k: int) -> int: