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
251 Longest Consecutive Sequence — 30 Medium Solve
252 Maximum Depth of Binary Tree — 20 Easy Solve
253 Maximum Product Subarray — 30 Medium Solve
254 Merge Triplets to Form Target Triplet — 30 Medium Solve
255 Minimum Interval to Include Each Query — 40 Hard Solve
256 Number of 1 Bits — 20 Easy Solve
257 Palindrome Partitioning — 30 Medium Solve
258 Regular Expression Matching — 40 Hard Solve
259 Regular Expression Matching — 40 Hard Solve
260 Two Sum II - Input Array Is Sorted — 30 Medium Solve
261 Best Time to Buy and Sell Stock — 20 Easy Solve
262 Best Time to Buy and Sell Stock — 20 Easy Solve
263 Binary Tree Maximum Path Sum — 40 Hard Solve
264 Binary Tree Right Side View — 30 Medium Solve
265 Copy List with Random Pointer — 30 Medium Solve
266 Distinct Subsequences — 40 Hard Solve
267 Gas Station — 30 Medium Solve
268 Letter Combinations of a Phone Number — 30 Medium Solve
269 Letter Combinations of a Phone Number — 30 Medium Solve
270 Linked List Cycle — 20 Easy Solve
271 Longest Consecutive Sequence — 30 Medium Solve
272 Minimum Interval to Include Each Query — 40 Hard Solve
273 Number of 1 Bits — 20 Easy Solve
274 Remove Nth Node From End of List — 30 Medium Solve
275 Same Tree — 20 Easy Solve
276 Same Tree — 20 Easy Solve
277 Surrounded Regions — 30 Medium Solve
278 Balanced Binary Tree — 20 Easy Solve
279 Best Time to Buy and Sell Stock — 20 Easy Solve
280 Clone Graph — 30 Medium Solve
281 Construct Binary Tree from Preorder and Inorder Traversal — 30 Medium Solve
282 Construct Binary Tree from Preorder and Inorder Traversal — 30 Medium Solve
283 Copy List with Random Pointer — 30 Medium Solve
284 Distinct Subsequences — 40 Hard Solve
285 Distinct Subsequences — 40 Hard Solve
286 Evaluate Reverse Polish Notation — 30 Medium Solve
287 Evaluate Reverse Polish Notation — 30 Medium Solve
288 Gas Station — 30 Medium Solve
289 LRU Cache — 30 Medium Solve
290 Longest Consecutive Sequence — 30 Medium Solve
291 Merge Triplets to Form Target Triplet — 30 Medium Solve
292 Min Stack — 30 Medium Solve
293 Minimum Interval to Include Each Query — 40 Hard Solve
294 Minimum Interval to Include Each Query — 40 Hard Solve
295 Number of 1 Bits — 20 Easy Solve
296 Regular Expression Matching — 40 Hard Solve
297 Reorder List — 30 Medium Solve
298 Single Number — 20 Easy Solve
299 3Sum — 30 Medium Solve
300 Binary Tree Level Order Traversal — 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