Top 50 cycle detection Interview Questions
The most frequently asked cycle detection questions across all roles and companies, ranked by real interview frequency. Updated daily.
Detect whether a directed dependency graph of startup tasks contains a cycle using DFS or topological ordering.
AqrXXiaomi Technology
Lucid MotorsUse DFS with recursion-state tracking to detect whether a directed dependency graph contains a cycle.
Altana
Zendesk
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Detect cycles in a disconnected directed dependency graph using iterative depth-first search and three-color state tracking.
Nutanix
Amazon AdvertisingDetect circular dependencies in Propio Interpreter Platform services using DFS node coloring.
Propio
AlphaSense
Character.AIUse Floyd's tortoise-and-hare algorithm to determine whether a linked list contains a cycle in O(n) time and O(1) space.
HashedIn by Deloitte
MSCI
HCLDetect whether a linked list contains a cycle using Floyd's slow and fast pointer algorithm.
Cisco Restaurant + BarMMoveInSync
NetskopeDetect whether a directed graph contains a cycle using depth-first search and node coloring.
CodeSignalDDeltaX
AllscriptsDetect whether a directed router graph contains a cycle using DFS with three-state visitation tracking.
Cisco Restaurant + Bar
Cisco