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Subarrays with K Different Integers

Understand how to use the sliding window pattern to count contiguous subarrays that contain exactly k distinct integers. This lesson helps you master efficient array processing and apply a key coding interview technique to solve similar problems quickly.

Statement

You are given an integer array nums and an integer k. Your task is to return the number of good subarrays of nums.

A good subarray is a contiguous subarray that contains exactly k distinct integers. For example, in the array [1,2,3,1,2][1, 2, 3, 1, 2], the subarray ...