Solution: Count Subarrays With Fixed Bounds
Understand how to use the two pointers technique to efficiently count fixed-bound subarrays where the minimum and maximum values match given bounds. Explore a single-pass algorithm that tracks critical indices for minK, maxK, and invalid elements to calculate valid subarray counts in linear time and constant space.
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We'll cover the following...
Statement
Given an integer array, nums, and two integers minK and maxK, return the number of fixed-bound subarrays.
A subarray in nums is called a fixed-bound subarray if it satisfies the following conditions:
The smallest value in the subarray equals
minK.The largest value in the subarray equals
maxK.
Note: A subarray is a contiguous sequence of elements within an array.
Constraints:
nums.length...