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103.Binary Tree Zigzag Level Order TraversalGiven therootof a binary tree, retur…
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49.Group AnagramsMedium12974387Add to ListShareGiven an array of stringsstrs, gr…
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76.Minimum Window SubstringHard13478593Add to ListShareGiven two stringssandtof …
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42.Trapping Rain WaterHard22787305Add to ListShareGivennnon-negative integers re…
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98.Validate Binary Search TreeMedium11369956Add to ListShareGiven therootof a bi…
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242.Valid AnagramEasy5889232Add to ListShareGiven two stringssandt, returntrueif…
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20.Valid ParenthesesGiven a stringscontaining just the characters'(',')','{','}…
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56.Merge IntervalsMedium13381518Add to ListShareGiven an arrayofintervalswherein…