Linked list cycle -leetcode

#1

what is the error in this code for the leetcode problem.
leetcode-https://leetcode.com/problems/linked-list-cycle/
ide->https://ide.codingblocks.com/s/204106

#2

@mikkyimran
You have to increment fast pointer twice and slow pointer once for slow pointer, fast pointer to work.

#3

i have incremented fast pointer before the while loop so it stays always one step ahead of slow. will that not work?

#4

Assume the cycle length is of 4, slow moves one step forward then fast moves one step forward. Slow cant catch the fast pointer

#5

fast is one step head before the loop and in the loop both are incremented. i am getting confused in my code also fast in one step head of slow

#6

Fast will always be one step ahead of slow.

#7

that’s what I am saying, in my code also fast is ahead.

#8

But cycle is detected when slow is equal to fast. This condition will never happen.