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# Title Acceptance Difficulty
526 Beautiful Arrangement 54.9% Medium
425 Word Squares 42.7% Hard
411 Minimum Unique Word Abbreviation 32.9% Hard
401 Binary Watch 44.8% Easy
357 Count Numbers with Unique Digits 46.1% Medium
351 Android Unlock Patterns 44.0% Medium
320 Generalized Abbreviation 45.0% Medium
294 Flip Game II 46.3% Medium
291 Word Pattern II 38.0% Hard
267 Palindrome Permutation II 31.8% Medium
254 Factor Combinations 42.8% Medium
216 Combination Sum III 45.5% Medium
212 Word Search II 23.6% Hard
211 Add and Search Word - Data structure design 23.3% Medium
140 Word Break II 23.5% Hard
131 Palindrome Partitioning 33.7% Medium
126 Word Ladder II 14.3% Hard
93 Restore IP Addresses 27.6% Medium
90 Subsets II 36.6% Medium
89 Gray Code 41.4% Medium
79 Word Search 27.0% Medium
78 Subsets 41.3% Medium
77 Combinations 40.0% Medium
60 Permutation Sequence 28.7% Medium
52 N-Queens II 45.2% Hard
51 N-Queens 31.4% Hard
47 Permutations II 33.1% Medium
46 Permutations 44.3% Medium
44 Wildcard Matching 20.3% Hard
40 Combination Sum II 34.1% Medium
39 Combination Sum 39.1% Medium
37 Sudoku Solver 30.5% Hard
22 Generate Parentheses 45.5% Medium
17 Letter Combinations of a Phone Number 34.8% Medium
10 Regular Expression Matching 24.1% Hard