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# Title Acceptance Difficulty
425 Word Squares 42.2% Hard
411 Minimum Unique Word Abbreviation 31.1% Hard
401 Binary Watch 43.7% Easy
357 Count Numbers with Unique Digits 45.2% Medium
351 Android Unlock Patterns 42.7% Medium
320 Generalized Abbreviation 43.6% Medium
294 Flip Game II 45.3% Medium
291 Word Pattern II 37.7% Hard
267 Palindrome Permutation II 31.1% Medium
254 Factor Combinations 40.6% Medium
216 Combination Sum III 42.0% Medium
212 Word Search II 22.3% Hard
211 Add and Search Word - Data structure design 20.1% Medium
140 Word Break II 22.2% Hard
131 Palindrome Partitioning 30.9% Medium
126 Word Ladder II 13.6% Hard
93 Restore IP Addresses 25.9% Medium
90 Subsets II 33.9% Medium
89 Gray Code 39.4% Medium
79 Word Search 25.4% Medium
78 Subsets 36.8% Medium
77 Combinations 37.9% Medium
60 Permutation Sequence 27.1% Medium
52 N-Queens II 42.9% Hard
51 N-Queens 29.1% Hard
47 Permutations II 31.0% Medium
46 Permutations 40.5% Medium
44 Wildcard Matching 19.0% Hard
40 Combination Sum II 31.4% Medium
39 Combination Sum 35.8% Medium
37 Sudoku Solver 28.2% Hard
22 Generate Parentheses 41.9% Medium
17 Letter Combinations of a Phone Number 32.5% Medium
10 Regular Expression Matching 23.6% Hard
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