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function to check if link list has cycle #2926

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merged 2 commits into from
Nov 7, 2017
Merged

function to check if link list has cycle #2926

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5035a4e
function to check if link list has cycle
axgarg94 Oct 31, 2017
8aef215
fixed error
axgarg94 Nov 6, 2017
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16 changes: 16 additions & 0 deletions code/data_structures/linked_list/circular_linked_list/isCircular.py
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Original file line number Diff line number Diff line change
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# uses try block so dont have to check if reached the end, provides faster runtime. credit-leetcode
def is_circular(self, head):
'''
function checks if a link list has a cycle or not
'''
try:
slow = head
fast = head.next

while slow is not fast:
slow = slow.next
fast = fast.next.next
return True
except:
return False