4 ms·
Haven't taken the time to read through this properly so forgive the question - but is this any different from the above problem? And if so - if someone solves
by quenstionsasked 8y ago
Haven't taken the time to read through this properly so forgive the question - but is this any different from the above problem?
And if so - if someone solves this programming task on leetcode have they not then also solved the permutation problem from OP?
- deleted 8y ago[deleted]
- robinhouston 8y agoIt is different because a safe combination may contain the same digit more than once, so the intended solution is a de Bruijn sequence: https://en.wikipedia.org/wiki/De_Bruijn_sequence https://en.wikipedia.org/wiki/De_Bruijn_sequence