The function continuously updates the longest substring each time it identifies a longer one. The Python version of the solution is quite similar to the C# version in terms of logic and approach. Both ...

``abcdef`` and ``xabded`` have two longest common substrings, ``ab`` or ``de``. Therefore, algorithm should return any one of them.

In 1975, Monty Python and the Holy Grail transformed the titular British sketch troupe from TV comedy icons to genuine movie stars. The film hit the ground running with its instantly quotable opening ...