Data Structures and Algorithms
Stacks, queues, trees, graphs and dynamic programming. 56 problems · Intermediate level.
56 problems
Linked list
Stack
Queue and deque
Hashing
Trees
Heap and priority queue
Graphs
- Shortest Path in a Grid (BFS)medium
- Number of Islandsmedium
- Count Connected Components (Union-Find)medium
- Shortest Path in an Unweighted Graph (BFS)medium
- Is the Graph Bipartite?medium
- Graph Valid Treemedium
- Shortest Path with Dijkstrahard
- Topological Order (Kahn's Algorithm)hard
- Minimum Spanning Tree (Kruskal)hard
Dynamic programming
- Climbing Stairseasy
- Coin Change (Minimum Coins)medium
- Longest Common Subsequencemedium
- House Robbermedium
- Minimum Path Sum in a Gridmedium
- Decode Waysmedium
- Partition into Two Equal-Sum Subsetsmedium
- Coin Change: Number of Waysmedium
- Longest Increasing Subsequencehard
- Edit Distance (Levenshtein)hard
- 0/1 Knapsackhard
- Maximum Product Subarrayhard
- Longest Palindromic Subsequencehard
- Stock Trading with Cooldownhard