Search⌘ K
AI Features

Solution: Subarrays with K Different Integers

Explore how to solve the problem of finding subarrays with exactly k distinct integers using the sliding window technique. Understand how to manage window size and frequency counts to efficiently calculate valid subarrays in linear time, improving your problem-solving skills for coding interviews.

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] ...