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Grokking the Coding Interview Patterns

Solution: Binary Subarrays With Sum

Let’s solve the Binary Subarrays With Sum problem using the Sliding Window pattern.

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Statement

You are given a binary array, nums, and an integer, goal. Your task is to return the number of non-empty subarraysThis refers to a subarray, which is a contiguous part of the array. with a sum that meets the goal.

Constraints:

  • 1≤1 \leq nums.length ≤3×104\leq 3 \times 10^4

  • nums[i] is either 00 ...