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Breadth First Search
0/91 solved
Number of Islands
MEDIUM
Coin Change
MEDIUM
Course Schedule
MEDIUM
Binary Tree Level Order Traversal
MEDIUM
Symmetric Tree
EASY
Invert Binary Tree
EASY
Rotting Oranges
MEDIUM
Maximum Depth of Binary Tree
EASY
Word Ladder
HARD
Binary Tree Right Side View
MEDIUM
Same Tree
EASY
Perfect Squares
MEDIUM
All Nodes Distance K in Binary Tree
MEDIUM
Binary Tree Zigzag Level Order Traversal
MEDIUM
Course Schedule II
MEDIUM
Serialize and Deserialize Binary Tree
HARD
Cheapest Flights Within K Stops
MEDIUM
Max Area of Island
MEDIUM
Number of Provinces
MEDIUM
Path Sum
EASY
Populating Next Right Pointers in Each Node
MEDIUM
01 Matrix
MEDIUM
Clone Graph
MEDIUM
Evaluate Division
MEDIUM
Longest Increasing Path in a Matrix
HARD
Surrounded Regions
MEDIUM
Merge Two Binary Trees
EASY
Flood Fill
EASY
Vertical Order Traversal of a Binary Tree
HARD
Network Delay Time
MEDIUM
Pacific Atlantic Water Flow
MEDIUM
Minimum Depth of Binary Tree
EASY
All Paths From Source to Target
MEDIUM
Accounts Merge
MEDIUM
Shortest Path in Binary Matrix
MEDIUM
Redundant Connection
MEDIUM
Keys and Rooms
MEDIUM
Word Ladder II
HARD
Count Good Nodes in Binary Tree
MEDIUM
Find Eventual Safe States
MEDIUM
Populating Next Right Pointers in Each Node II
MEDIUM
Remove Invalid Parentheses
HARD
Number of Operations to Make Network Connected
MEDIUM
Open the Lock
MEDIUM
Possible Bipartition
MEDIUM
Shortest Path in a Grid with Obstacles Elimination
HARD
Number of Closed Islands
MEDIUM
Alien Dictionary
HARD
Bus Routes
HARD
Cousins in Binary Tree
EASY
Making A Large Island
HARD
Trapping Rain Water II
HARD
Jump Game IV
HARD
N-ary Tree Level Order Traversal
MEDIUM
Maximum Level Sum of a Binary Tree
MEDIUM
Shortest Path with Alternating Colors
MEDIUM
Minimum Distance Between BST Nodes
EASY
Serialize and Deserialize BST
MEDIUM
Graph Valid Tree
MEDIUM
Binary Tree Vertical Order Traversal
MEDIUM
Pseudo-Palindromic Paths in a Binary Tree
MEDIUM
Walls and Gates
MEDIUM
Minimum Genetic Mutation
MEDIUM
Snakes and Ladders
MEDIUM
Maximum Depth of N-ary Tree
EASY
Sum of Nodes with Even-Valued Grandparent
MEDIUM
Number of Connected Components in an Undirected Graph
MEDIUM
Redundant Connection II
HARD
Number of Distinct Islands
MEDIUM
Minesweeper
MEDIUM
Shortest Distance from All Buildings
HARD
The Maze
MEDIUM
Nested List Weight Sum
MEDIUM
Minimum Knight Moves
MEDIUM
Course Schedule IV
MEDIUM
The Maze II
MEDIUM
Count Servers that Communicate
MEDIUM
Cut Off Trees for Golf Event
HARD
Detect Cycles in 2D Grid
MEDIUM
K-Similar Strings
HARD
Serialize and Deserialize N-ary Tree
HARD
Sentence Similarity II
MEDIUM
Coloring A Border
MEDIUM
Pyramid Transition Matrix
MEDIUM
Find Distance in a Binary Tree
MEDIUM
Get Watched Videos by Your Friends
MEDIUM
Clone N-ary Tree
MEDIUM
Web Crawler
MEDIUM
Number of Distinct Islands II
HARD
Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree
MEDIUM
Stepping Numbers
MEDIUM