Code RoomPattern occurrence count
MediumPrep Room Coding #577

Pattern occurrence count

CodingAlgorithms & data structuresEntry–Mid~13 min

Count how many times a pattern occurs in a text when overlapping occurrences count separately. The pattern is non-empty; either string may otherwise be anything. For example, 'aa' occurs 4 times in 'aaaaa' (starting at indexes 0, 1, 2, and 3), and 'aba' occurs 3 times in 'abababa'.

Implement
count_overlapping(text: str, pattern: str) → int
Examples
in["aaaaa","aa"]out4
What a strong answer looks like

State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.

0:00 of about 13 min
InputExpectedGot
["aaaaa","aa"]4not run yetsample