Design Abstractions Inheritance vs. Composition Interfaces vs. Abstract Classes Open vs. Closed APIs Controlling API Size Read-only Interfaces Single-Responsibility Principle...
4Sum 4Sum Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target ? Find all unique quadruplets in the array which gives the sum...
4 Discovery rules Overview Mass editing options Using filter 4 Discovery rules Overview The list of low-level discovery rules for a host can be accessed from Data collection...