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Topic: Breadth-First Search

197 problems
#TitleStatusDifficulty
100Same Tree—Easy
101Symmetric Tree—Easy
102Binary Tree Level Order Traversal—Medium
103Binary Tree Zigzag Level Order Traversal—Medium
104Maximum Depth of Binary Tree—Easy
107Binary Tree Level Order Traversal II—Medium
111Minimum Depth of Binary Tree—Easy
112Path Sum—Easy
116Populating Next Right Pointers in Each Node—Medium
117Populating Next Right Pointers in Each Node II—Medium
126Word Ladder II—Hard
127Word Ladder—Hard
130Surrounded Regions—Medium
133Clone Graphread—Medium
199Binary Tree Right Side View—Medium
200Number of Islands—Medium
207Course Scheduleread—Medium
210Course Schedule IIread—Medium
226Invert Binary Tree—Easy
261Graph Valid Tree—Medium
269Alien Dictionary—Hard
279Perfect Squares—Medium
286Walls and Gates—Medium
297Serialize and Deserialize Binary Treeread—Hard
301Remove Invalid Parentheses—Hard
310Minimum Height Trees—Medium
322Coin Change—Medium
323Number of Connected Components in an Undirected Graphread—Medium
329Longest Increasing Path in a Matrix—Hard
365Water and Jug Problem—Medium
399Evaluate Divisionread—Medium
404Sum of Left Leaves—Easy
407Trapping Rain Water II—Hard
417Pacific Atlantic Water Flow—Medium
429N-ary Tree Level Order Traversal—Medium
433Minimum Genetic Mutation—Medium
449Serialize and Deserialize BSTread—Medium
463Island Perimeterread—Easy
488Zuma Game—Hard
513Find Bottom Left Tree Value—Medium
514Freedom Trail—Hard
515Find Largest Value in Each Tree Row—Medium
529Minesweeperread—Medium
530Minimum Absolute Difference in BST—Easy
54201 Matrix—Medium
547Number of Provinces—Medium
559Maximum Depth of N-ary Tree—Easy
617Merge Two Binary Trees—Easy
623Add One Row to Tree—Medium
637Average of Levels in Binary Treeread—Easy
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