LeetCode #992 Subarrays with K Different Integers K 个不同整数的子数组
992SubarrayswithKDifferentIntegersK个不同整数的子数组Description:Givenanintegerarraynumsandanintegerk,returnthenumberofgoodsubarraysofnums.Agoodarrayisanarraywherethenumberofdifferentintegersinthatarrayisexact