Tortoise and Hare algorithm (Linked list)

[rohitgargRG]

would like to add one of the most widely used algorithm' in linked list ,i.e . Tortoise and hare algorithm's detailed approach.

[sherlockwayne]

Please assign this issue to me, I would like to contribute

[Saloni6111]

would like to add one of the most widely used algorithm' in linked list ,i.e . Tortoise and hare algorithm's detailed approach.

@rohitgargRG Go-ahead!

[oiiamsaurav78]

Can u assign this issue to me, I would like to do my first contribution