Trees and graphs
32 practice items · needed by 17 roles
Easy 5Medium 13Hard 14
Coding problems
- Depth of a Level-Order Treeeasy
- Is the Tree Its Own Mirror?easy
- Is There a Corridor Route?easy
- Mirror a Binary Treeeasy
- Sum of Prices in a Rangeeasy
- Build a Threaded Comment Treemedium
- Cheapest Route With Limited Layoversmedium
- Count Islands on a Mapmedium
- Fewest Terms to Finish a Programmedium
- Find the Redundant Cablemedium
- Is It a Valid Search Tree?medium
- Kth Smallest Badge Numbermedium
- Minutes Until the Rack Is Infectedmedium
- Plan Courses Smallest-Firstmedium
- Search Box Suggestionsmedium
- Trace a Word on a Letter Boardmedium
- What You See From the Rightmedium
- Zigzag Levels of a Treemedium
- Best Path Sum in a Treehard
- Escape the Rising Floodhard
- Fewest Monitors to Watch a Treehard
- Find Every Dictionary Word on the Boardhard
- Largest XOR of Two Numbershard
- Merkle Root and Inclusion Proofhard
- Network Signal Delayhard
- Parallel Install Waves for Packageshard
- Prune Links Two Teams Sharehard
- Rainwater on a Terrain Maphard
- Recover an Unknown Alphabethard
- Shortest Delivery Loophard
- Shortest Word Chainhard
- Water Supply for Every Househard