Solution: Count Subarrays With Fixed Bounds
Explore the two pointers technique to count fixed-bound subarrays where the subarray's minimum equals minK and maximum equals maxK. Learn to track key indices efficiently in one pass, handle invalid elements, and calculate valid subarray counts with a linear time solution and constant extra space.
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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:
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