Number of Zero-Filled Subarrays LeetCode Solution

Problem – Number of Zero-Filled Subarrays LeetCode Solution

Given an integer array nums, return the number of subarrays filled with 0.

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.

Example 2:

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.

Constraints:

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

Number of Zero-Filled Subarrays LeetCode Solution in Java

public long zeroFilledSubarray(int[] nums) {
    long res = 0;
    for (int i = 0, j = 0; i < nums.length; ++i) {
        if (nums[i] != 0)
            j = i + 1;
         res += i - j + 1;
    }
    return res;
}

Number of Zero-Filled Subarrays LeetCode Solution in C++

long long zeroFilledSubarray(vector<int>& nums) {
    long long res = 0;
    for (int i = 0, j = 0; i < nums.size(); ++i) {
        if (nums[i] != 0)
            j = i + 1;
         res += i - j + 1;
    }
    return res;
}

Number of Zero-Filled Subarrays LeetCode Solution in Python

class Solution:
    def zeroFilledSubarray(self, nums: List[int]) -> int:
        
        n = len(nums)

        ans = 0
        i, j = 0, 0
        while i <= n - 1:
            j = 0
            if nums[i] == 0:
                while i + j <= n - 1 and nums[i + j] == 0:
                    j += 1
                ans += (j + 1) * j // 2

            i = i + j + 1
        
        return ans
Number of Zero-Filled Subarrays LeetCode Solution Review:

In our experience, we suggest you solve this Number of Zero-Filled Subarrays LeetCode Solution and gain some new skills from Professionals completely free and we assure you will be worth it.

If you are stuck anywhere between any coding problem, just visit Queslers to get the Number of Zero-Filled Subarrays LeetCode Solution

Find on LeetCode

Conclusion:

I hope this Number of Zero-Filled Subarrays LeetCode Solution would be useful for you to learn something new from this problem. If it helped you then don’t forget to bookmark our site for more Coding Solutions.

This Problem is intended for audiences of all experiences who are interested in learning about Data Science in a business context; there are no prerequisites.

Keep Learning!

More Coding Solutions >>

LeetCode Solutions

Hacker Rank Solutions

CodeChef Solutions

Leave a Reply

Your email address will not be published.