Toolliyo Practice

Problems explorer

Browse by topic · auto-judge · company sheets · roadmaps — not just a problem dump.

623 problems in this topic

# Title Topics Acceptance Pts Difficulty
1 Best Time to Buy and Sell Stock — 20 Easy Solve
2 Binary Tree Maximum Path Sum — 40 Hard Solve
3 Binary Tree Right Side View — 30 Medium Solve
4 Container With Most Water — 30 Medium Solve
5 Container With Most Water — 30 Medium Solve
6 Copy List with Random Pointer — 30 Medium Solve
7 LRU Cache — 30 Medium Solve
8 Longest Common Subsequence — 30 Medium Solve
9 Maximum Depth of Binary Tree — 20 Easy Solve
10 Merge Triplets to Form Target Triplet — 30 Medium Solve
11 Min Cost to Connect All Points — 30 Medium Solve
12 Min Stack — 30 Medium Solve
13 Minimum Interval to Include Each Query — 40 Hard Solve
14 Palindrome Partitioning — 30 Medium Solve
15 Regular Expression Matching — 40 Hard Solve
16 Reorder List — 30 Medium Solve
17 Same Tree — 20 Easy Solve
18 Surrounded Regions — 30 Medium Solve
19 3Sum — 30 Medium Solve
20 Binary Tree Maximum Path Sum — 40 Hard Solve
21 Binary Tree Right Side View — 30 Medium Solve
22 Distinct Subsequences — 40 Hard Solve
23 Evaluate Reverse Polish Notation — 30 Medium Solve
24 House Robber — 30 Medium Solve
25 LRU Cache — 30 Medium Solve
26 Letter Combinations of a Phone Number — 30 Medium Solve
27 Maximum Depth of Binary Tree — 20 Easy Solve
28 Merge Triplets to Form Target Triplet — 30 Medium Solve
29 Min Stack — 30 Medium Solve
30 Minimum Interval to Include Each Query — 40 Hard Solve
31 Number of 1 Bits — 20 Easy Solve
32 Palindrome Partitioning — 30 Medium Solve
33 Reorder List — 30 Medium Solve
34 Reorder List — 30 Medium Solve
35 Same Tree — 20 Easy Solve
36 Surrounded Regions — 30 Medium Solve
37 Two Sum II - Input Array Is Sorted — 30 Medium Solve
38 Word Ladder — 40 Hard Solve
39 3Sum — 30 Medium Solve
40 Balanced Binary Tree — 20 Easy Solve
41 Binary Tree Level Order Traversal — 30 Medium Solve
42 Binary Tree Maximum Path Sum — 40 Hard Solve
43 Binary Tree Right Side View — 30 Medium Solve
44 Clone Graph — 30 Medium Solve
45 Construct Binary Tree from Preorder and Inorder Traversal — 30 Medium Solve
46 Container With Most Water — 30 Medium Solve
47 Gas Station — 30 Medium Solve
48 Linked List Cycle — 20 Easy Solve
49 Maximum Product Subarray — 30 Medium Solve
50 Merge Triplets to Form Target Triplet — 30 Medium Solve
Toolliyo Assistant
Ask about tutorials, ebooks, training, pricing, mentor services, and support. I use public site content only—not admin or internal tools.

care@toolliyo.com

Need callback? Share your details