Available question text
Given up to 7 letter tiles (with possible duplicates), count how many distinct non-empty sequences you can form using each tile at most once. The core challenge is enumerating all unique permutations of every subset of a multiset while avoiding overcounting due to repeated letters.
Related questions
Continue with questions that share topics or the same question type.
Sources · 1 reference
These records explain where the question appears. A company tag or candidate report does not guarantee a future interview question.
Hello Interview · 1 record
No company association
Leetcode 1079. Letter Tile Possibilities
Reported date not specified · 0 source reports
Source snapshot: Nov 12, 2026
View source