Solution: Subarrays with K Different Integers
Understand how to apply the sliding window pattern to count subarrays with exactly k distinct integers in an array. Learn to use frequency maps and two-pointer technique to efficiently track and adjust subarrays, enabling linear time complexity solutions for this common coding interview problem.
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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
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