Search⌘ K
AI Features

Solution: Count Subarrays With Fixed Bounds

Explore how to solve the problem of counting subarrays with fixed minimum and maximum bounds using a single-pass two pointers approach. Learn to track key indices and efficiently calculate valid subarrays in linear time. This lesson develops your skills in problem analysis and optimal array traversal, preparing you for coding interviews.

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:

  1. The smallest value in the subarray equals minK.

  2. The largest value in the subarray equals maxK.

Note: A subarray is a contiguous sequence of elements within an array.

Constraints:

  • 2 ...