Hash Table

14 questions

1Integer to RomanMedium

Hash TableMathString

2Roman to IntegerEasy

Hash TableMathString

3Reconstruct Original Digits from EnglishMedium

Hash TableMathString

4Clone GraphMedium

Hash TableDepth-First SearchBreadth-First Search

5Copy List with Random PointerMedium

Hash TableLinked List

6All Nodes Distance K in Binary TreeMedium

Hash TableTreeDepth-First Search

7Lowest Common Ancestor of a Binary Tree IIIMedium

Hash TableTwo PointersTree

8Integer to RomanMedium

Hash TableMathString

9All Nodes Distance K in Binary TreeMedium

Hash TableTreeDepth-First Search

10Clone GraphMedium

Hash TableDepth-First SearchBreadth-First Search

11Copy List with Random PointerMedium

Hash TableLinked List

12Roman to IntegerEasy

Hash TableMathString

13Reconstruct Original Digits from EnglishMedium

Hash TableMathString

14Lowest Common Ancestor of a Binary Tree IIIMedium

Hash TableTwo PointersTree