Given a linked list find if there is loop. (I gave standard algo, then he asked why it works?) Extended to find loop point. (I said I know this question, So he just changed the topic without getting into details.. :P ;) )

Given a linked list find if there is loop. (I gave standard algo, then

1.	Given a linked list find if there is loop. (I gave standard algo, then he asked why it works?) Extended to find loop point. (I said I know this question, So he just changed the topic without getting into details.. :P ;) )
Answer»