Toolliyo Practice

Problems explorer

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

420 problems in this topic

# Title Topics Acceptance Pts Difficulty
251 Two Sum — 20 Easy Solve
252 Word Ladder — 40 Hard Solve
253 3Sum — 30 Medium Solve
254 Add Two Numbers — 30 Medium Solve
255 Climbing Stairs — 20 Easy Solve
256 Course Schedule II — 30 Medium Solve
257 Find the Duplicate Number — 30 Medium Solve
258 Max Area of Island — 30 Medium Solve
259 Merge Triplets to Form Target Triplet — 30 Medium Solve
260 Regular Expression Matching — 40 Hard Solve
261 Search in Rotated Sorted Array — 30 Medium Solve
262 Task Scheduler — 30 Medium Solve
263 Valid Palindrome — 20 Easy Solve
264 Word Break — 30 Medium Solve
265 Balanced Binary Tree — 20 Easy Solve
266 Coin Change — 30 Medium Solve
267 Combination Sum II — 30 Medium Solve
268 Copy List with Random Pointer — 30 Medium Solve
269 Longest Repeating Character Replacement — 30 Medium Solve
270 Maximum Depth of Binary Tree — 20 Easy Solve
271 Meeting Rooms II — 30 Medium Solve
272 Minimum Window Substring — 40 Hard Solve
273 Network Delay Time — 30 Medium Solve
274 Partition Labels — 30 Medium Solve
275 Redundant Connection — 30 Medium Solve
276 Target Sum — 30 Medium Solve
277 Best Time to Buy and Sell Stock with Cooldown — 30 Medium Solve
278 Binary Tree Right Side View — 30 Medium Solve
279 Car Fleet — 30 Medium Solve
280 Generate Parentheses — 30 Medium Solve
281 House Robber II — 30 Medium Solve
282 Invert Binary Tree — 20 Easy Solve
283 Max Area of Island — 30 Medium Solve
284 Maximum Subarray — 30 Medium Solve
285 Minimum Interval to Include Each Query — 40 Hard Solve
286 Pow(x, n) — 30 Medium Solve
287 Swim in Rising Water — 40 Hard Solve
288 Validate Binary Search Tree — 30 Medium Solve
289 Binary Tree Level Order Traversal — 30 Medium Solve
290 Burst Balloons — 40 Hard Solve
291 Find Minimum in Rotated Sorted Array — 30 Medium Solve
292 Implement Trie (Prefix Tree) — 30 Medium Solve
293 Longest Increasing Subsequence — 30 Medium Solve
294 Longest Palindromic Substring — 30 Medium Solve
295 Missing Number — 20 Easy Solve
296 Multiply Strings — 30 Medium Solve
297 Redundant Connection — 30 Medium Solve
298 Time Based Key-Value Store — 30 Medium Solve
299 Valid Parenthesis String — 30 Medium Solve
300 Word Search II — 40 Hard Solve
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