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Topic: Breadth-First Search

197 problems
TitleStatusDifficulty
Same Tree—Easy
Symmetric Tree—Easy
Binary Tree Level Order Traversal—Medium
Binary Tree Zigzag Level Order Traversal—Medium
Maximum Depth of Binary Tree—Easy
Binary Tree Level Order Traversal II—Medium
Minimum Depth of Binary Tree—Easy
Path Sum—Easy
Populating Next Right Pointers in Each Node—Medium
Populating Next Right Pointers in Each Node II—Medium
Word Ladder II—Hard
Word Ladder—Hard
Surrounded Regions—Medium
Clone Graph—Medium
Binary Tree Right Side View—Medium
Number of Islands—Medium
Course Schedule—Medium
Course Schedule II—Medium
Invert Binary Tree—Easy
Graph Valid Tree—Medium
Alien Dictionary—Hard
Perfect Squares—Medium
Walls and Gates—Medium
Serialize and Deserialize Binary Tree—Hard
Remove Invalid Parentheses—Hard
Minimum Height Trees—Medium
Coin Change—Medium
Number of Connected Components in an Undirected Graph—Medium
Longest Increasing Path in a Matrix—Hard
Water and Jug Problem—Medium
Evaluate Division—Medium
Sum of Left Leaves—Easy
Trapping Rain Water II—Hard
Pacific Atlantic Water Flow—Medium
N-ary Tree Level Order Traversal—Medium
Minimum Genetic Mutation—Medium
Serialize and Deserialize BSTread—Medium
Island Perimeter—Easy
Zuma Game—Hard
Find Bottom Left Tree Value—Medium
Freedom Trail—Hard
Find Largest Value in Each Tree Row—Medium
Minesweeper—Medium
Minimum Absolute Difference in BST—Easy
01 Matrix—Medium
Number of Provinces—Medium
Maximum Depth of N-ary Tree—Easy
Merge Two Binary Trees—Easy
Add One Row to Tree—Medium
Average of Levels in Binary Tree—Easy
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