Getting good at LeetCode Java can feel like a puzzle sometimes, right? You see all these problems, and you’re not sure where to even start. This guide is here to break down the common approaches and ...

347 Top K Frequentの解説をしていきます。Top K Frequent Elements は整数型の配列と整数値 K が与えられ、配列に出現する回数が多い値上位 K 件を求める問題です。 ハッシュマップとヒープを用いる解法について解説します。解説は、方針の概略、実際のコード ...

Given [1,1,1,2,2,3] and k = 2, return [1,2]. Note: You may assume k is always valid, 1 ≤ k ≤ number of unique elements. Your algorithm's time complexity must be better than O(n log n), where n is the ...

So, you want to get good at LeetCode, especially using Java? It’s a common goal for a lot of us trying to land those tech jobs. This guide is all about helping you get there. We’ll go over how to ...