Linked List coding problems
Linked structure problems test pointer handling: reversing, finding the middle, detecting cycles and merging, written as plain programs that read input and print output.
20 problems: 10 easy, 10 medium, 0 hard. Free to read; a free account solves them and earns XP and Aura.
- Array List TraversalPractice · +10 XP · linked structures, array simulationeasy
- Find Element After StepsPractice · +10 XP · linked structures, simulation, arrayseasy
- Find End of Linked ListPractice · +10 XP · linked structures, simulation, arrayseasy
- Find Linked List TailPractice · +10 XP · linked structures, arrays, traversaleasy
- Find Next NodePractice · +10 XP · linked structures, array traversal, simulationeasy
- Find Node at Fixed DepthPractice · +10 XP · linked structures, simulation, arrayseasy
- Find Path LengthPractice · +10 XP · linked structures, simulation, traversaleasy
- Next ElementPractice · +10 XP · linked structures, arrays, simulationeasy
- Next Element in ArrayPractice · +10 XP · linked structures, simulation, arrayseasy
- Sum of Next ValuesPractice · +10 XP · linked structures, arrays, simulationeasy
- Array Linked List SimulationPractice · +20 XP · linked structures, simulation, cycle detectionmedium
- Cycle Detection and RendezvousPractice · +20 XP · linked structures, cycle detection, two pointersmedium
- Find Duplicate Cycle EntryPractice · +20 XP · linked structures, hash map, cycle detectionmedium
- Find Duplicate Jump TargetPractice · +20 XP · linked structures, hash map, simulationmedium
- Find Duplicate Node in PathPractice · +20 XP · linked structures, arrays, cyclesmedium
- Find First Duplicate Entry PointPractice · +20 XP · linked structures, cycle detection, two pointersmedium
- K-th Node in CyclePractice · +20 XP · linked structures, cycles, two pointersmedium
- Linked List CompressionPractice · +20 XP · linked structures, hash maps, simulationmedium
- Linked List Jump GamePractice · +20 XP · linked structures, cycle detection, graph traversalmedium
- Linked List Path SumPractice · +20 XP · linked structures, hash map, cycle detectionmedium
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Other topics
Hash Map and Hashing101Arrays88Prefix Sums64SQL and Databases64Beginner Coding Problems60Graphs, BFS and DFS45Greedy41Sliding Window39Dynamic Programming37Sorting36Math and Number Theory36Strings35Two Pointers35Stack29Binary Search25Simulation25Recursion22Trees20Heap and Priority Queue18Matrix and Grid18Bit Manipulation18Queue and Deque16