Version Published Release Notes 1. Search Answers Clear Filters. A de Bruijn sequence can be used to shorten a brute-force attack on a PIN -like code lock that does not have an "enter" key and accepts the last n digits entered. I am afraid this image could not be edge detected well, it is the first important step to process! Time complexity: O N because we iterate in a for loop for N times to update N terms of the sequence.
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