Big O notation is a metric to measure an algorithm's efficiency.
This solution contains C# examples based on the 'Cracking the Coding Interview' book.
Install Visual Studio 2022 Community edition
Install .NET 6 using the 'Visual Studio Installer' or from [here] (https://dotnet.microsoft.com/en-us/download/dotnet/6.0)
Run the Console app
Credits to the book 'Cracking the Coding Interview' by Gayle Laakmann McDowell 6th edition - 2015