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  2. 2 Additional Online Test (If Required)
  3. 3 Office Interview with Hiring Manager
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  5. 5 Paid Test Task and Follow-Up Interview
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Problems > Count Pattern Occurrences > Editorial

Count Pattern Occurrences — Solution & Editorial

Back to the Problem

Check every starting position (fine at these limits), or use KMP for O(|T| + |P|). Advance by one after each match so overlaps count.

Complexity: O(|T| · |P|) naive fits; O(|T| + |P|) with KMP

Watch out: Jumping past a whole match after finding one silently misses overlapping occurrences.