Toolliyo Practice

Problems explorer

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

245 problems in this topic

# Title Topics Acceptance Pts Difficulty
1 Binary Tree Maximum Path Sum 40 Hard Solve
2 Binary Tree Right Side View 30 Medium Solve
3 Hand of Straights 30 Medium Solve
4 Insert Interval 30 Medium Solve
5 Merge Intervals 30 Medium Solve
6 Merge Triplets to Form Target Triplet 30 Medium Solve
7 Merge Two Sorted Lists 20 Easy Solve
8 Multiply Strings 30 Medium Solve
9 Implement Trie (Prefix Tree) 30 Medium Solve
10 K Closest Points to Origin 30 Medium Solve
11 LRU Cache 30 Medium Solve
12 Meeting Rooms 20 Easy Solve
13 Meeting Rooms II 30 Medium Solve
14 Set Matrix Zeroes 30 Medium Solve
15 Spiral Matrix 30 Medium Solve
16 Sum of Two Integers 30 Medium Solve
17 Number of 1 Bits 20 Easy Solve
18 Permutations 30 Medium Solve
19 Plus One 20 Easy Solve
20 Pow(x, n) 30 Medium Solve
21 Product of Array Except Self 30 Medium Solve
22 Same Tree 20 Easy Solve
23 Single Number 20 Easy Solve
24 Task Scheduler 30 Medium Solve
25 Combination Sum II 30 Medium Solve
26 Container With Most Water 30 Medium Solve
27 Contains Duplicate 20 Easy Solve
28 Kth Smallest Element in a BST 30 Medium Solve
29 Missing Number 20 Easy Solve
30 Number of Islands 30 Medium Solve
31 Reverse Bits 20 Easy Solve
32 Valid Anagram 20 Easy Solve
33 Course Schedule 30 Medium Solve
34 Encode and Decode Strings 30 Medium Solve
35 Group Anagrams 30 Medium Solve
36 Kth Largest Element in a Stream 20 Easy Solve
37 Longest Consecutive Sequence 30 Medium Solve
38 Max Area of Island 30 Medium Solve
39 Sliding Window Maximum 40 Hard Solve
40 Top K Frequent Elements 30 Medium Solve
41 3Sum 30 Medium Solve
42 Best Time to Buy and Sell Stock 20 Easy Solve
43 Largest Rectangle in Histogram 40 Hard Solve
44 Longest Substring Without Repeating Characters 30 Medium Solve
45 Min Cost to Connect All Points 30 Medium Solve
46 Redundant Connection 30 Medium Solve
47 Subsets 30 Medium Solve
48 Two Sum II - Input Array Is Sorted 30 Medium Solve
49 Evaluate Reverse Polish Notation 30 Medium Solve
50 House Robber 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