/* 1-Sort the Array: Start by sorting the array. Sorting helps in efficiently skipping duplicate quadruplets and allows the use of the two-pointer technique. 2-Four Nested Loops: The outer two loops ...

* 2. a, b, c, and d are distinct. * 3. nums[a] + nums[b] + nums[c] + nums[d] == target * The solution set must not contain duplicate quadruplets. * Intuition: * The problem is an extension of 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 ...