[Solution] Number of Zero-Filled Subarrays solution leetcode

Number of Zero-Filled Subarrays solution leetcode – Given an integer array nums, return the number of subarrays filled with 0.

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[Solution] Number of Zero-Filled Subarrays solution leetcode

subarray is a contiguous non-empty sequence of elements within an array.

 

Example 1:

Input: nums = [1,3,0,0,2,0,0,4]
Output: 6
Explanation: 
There are 4 occurrences of [0] as a subarray.
There are 2 occurrences of [0,0] as a subarray.
There is no occurrence of a subarray with a size more than 2 filled with 0. Therefore, we return 6.

[Solution] Number of Zero-Filled Subarrays solution leetcode

Input: nums = [0,0,0,2,0,0]
Output: 9
Explanation:
There are 5 occurrences of [0] as a subarray.
There are 3 occurrences of [0,0] as a subarray.
There is 1 occurrence of [0,0,0] as a subarray.
There is no occurrence of a subarray with a size more than 3 filled with 0. Therefore, we return 9.

Example 3:

Input: nums = [2,10,2019]
Output: 0
Explanation: There is no subarray filled with 0. Therefore, we return 0.

 

[Solution] Number of Zero-Filled Subarrays solution leetcode

  • 1 <= nums.length <= 105
  • -109 <= nums[i] <= 109

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