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Citadel
Breadth First Search
Breadth First Search
0/20 solved
Number of Islands
MEDIUM
Course Schedule
MEDIUM
Rotting Oranges
MEDIUM
Word Ladder
HARD
Perfect Squares
MEDIUM
Binary Tree Zigzag Level Order Traversal
MEDIUM
Course Schedule II
MEDIUM
Serialize and Deserialize Binary Tree
HARD
Populating Next Right Pointers in Each Node
MEDIUM
Evaluate Division
MEDIUM
Longest Increasing Path in a Matrix
HARD
Minimum Height Trees
MEDIUM
Word Ladder II
HARD
Populating Next Right Pointers in Each Node II
MEDIUM
Open the Lock
MEDIUM
Alien Dictionary
HARD
Bus Routes
HARD
Couples Holding Hands
HARD
Sort Items by Groups Respecting Dependencies
HARD
Minimum Knight Moves
MEDIUM