<h1><a href="https://www.youtube.com/watch?v=P--bO0BgLTs" target="_blank"><span>Mapping Vs Arrays | Gas Optimisation - Solidity</span></a></h1><h1><a href="https://www.youtube.com/shorts/J_Wh4Ehrsnw" target="_blank"><span>Top Solidity Interview Questions: Questions 7: Whitelist: Array Vs Mapping! #solidity</span></a></h1>