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g2401_2500.s2444_count_subarrays_with_fixed_bounds.readme.md Maven / Gradle / Ivy

2444\. Count Subarrays With Fixed Bounds

Hard

You are given an integer array `nums` and two integers `minK` and `maxK`.

A **fixed-bound subarray** of `nums` is a subarray that satisfies the following conditions:

*   The **minimum** value in the subarray is equal to `minK`.
*   The **maximum** value in the subarray is equal to `maxK`.

Return _the **number** of fixed-bound subarrays_.

A **subarray** is a **contiguous** part of an array.

**Example 1:**

**Input:** nums = [1,3,5,2,7,5], minK = 1, maxK = 5

**Output:** 2

**Explanation:** The fixed-bound subarrays are [1,3,5] and [1,3,5,2].

**Example 2:**

**Input:** nums = [1,1,1,1], minK = 1, maxK = 1

**Output:** 10

**Explanation:** Every subarray of nums is a fixed-bound subarray. There are 10 possible subarrays.

**Constraints:**

*   2 <= nums.length <= 105
*   1 <= nums[i], minK, maxK <= 106