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# Title Acceptance Difficulty
691 Stickers to Spell Word 33.1% Hard
526 Beautiful Arrangement 54.2% Medium
425 Word Squares 43.5% Hard
411 Minimum Unique Word Abbreviation 33.3% Hard
401 Binary Watch 44.9% Easy
357 Count Numbers with Unique Digits 46.1% Medium
351 Android Unlock Patterns 44.3% Medium
320 Generalized Abbreviation 45.5% Medium
294 Flip Game II 46.6% Medium
291 Word Pattern II 38.1% Hard
267 Palindrome Permutation II 32.0% Medium
254 Factor Combinations 43.2% Medium
216 Combination Sum III 46.1% Medium
212 Word Search II 24.0% Hard
211 Add and Search Word - Data structure design 24.1% Medium
140 Word Break II 23.9% Hard
131 Palindrome Partitioning 34.4% Medium
126 Word Ladder II 14.5% Hard
93 Restore IP Addresses 27.9% Medium
90 Subsets II 37.2% Medium
89 Gray Code 41.7% Medium
79 Word Search 27.4% Medium
78 Subsets 42.5% Medium
77 Combinations 40.4% Medium
60 Permutation Sequence 29.0% Medium
52 N-Queens II 45.8% Hard
51 N-Queens 32.1% Hard
47 Permutations II 33.7% Medium
46 Permutations 45.3% Medium
44 Wildcard Matching 20.6% Hard
40 Combination Sum II 34.7% Medium
39 Combination Sum 39.9% Medium
37 Sudoku Solver 31.0% Hard
22 Generate Parentheses 46.3% Medium
17 Letter Combinations of a Phone Number 35.4% Medium
10 Regular Expression Matching 24.3% Hard