Toolliyo Practice

Problems explorer

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

490 problems in this topic

# Title Topics Acceptance Pts Difficulty
301 Serialize and Deserialize Binary Tree — 40 Hard Solve
302 Two Sum — 20 Easy Solve
303 Unique Paths — 30 Medium Solve
304 Validate Binary Search Tree — 30 Medium Solve
305 Binary Tree Level Order Traversal — 30 Medium Solve
306 Container With Most Water — 30 Medium Solve
307 Counting Bits — 20 Easy Solve
308 Distinct Subsequences — 40 Hard Solve
309 Evaluate Reverse Polish Notation — 30 Medium Solve
310 Kth Largest Element in an Array — 30 Medium Solve
311 Merge Intervals — 30 Medium Solve
312 Network Delay Time — 30 Medium Solve
313 Serialize and Deserialize Binary Tree — 40 Hard Solve
314 Subtree of Another Tree — 20 Easy Solve
315 Swim in Rising Water — 40 Hard Solve
316 Time Based Key-Value Store — 30 Medium Solve
317 Valid Palindrome — 20 Easy Solve
318 Walls and Gates — 30 Medium Solve
319 Word Search — 30 Medium Solve
320 Word Search II — 40 Hard Solve
321 Add Two Numbers — 30 Medium Solve
322 Construct Binary Tree from Preorder and Inorder Traversal — 30 Medium Solve
323 Find Median from Data Stream — 40 Hard Solve
324 Gas Station — 30 Medium Solve
325 House Robber II — 30 Medium Solve
326 Koko Eating Bananas — 30 Medium Solve
327 Kth Largest Element in an Array — 30 Medium Solve
328 Longest Palindromic Substring — 30 Medium Solve
329 Longest Repeating Character Replacement — 30 Medium Solve
330 Pacific Atlantic Water Flow — 30 Medium Solve
331 Reconstruct Itinerary — 40 Hard Solve
332 Serialize and Deserialize Binary Tree — 40 Hard Solve
333 Set Matrix Zeroes — 30 Medium Solve
334 Sliding Window Maximum — 40 Hard Solve
335 Subsets II — 30 Medium Solve
336 Two Sum — 20 Easy Solve
337 Clone Graph — 30 Medium Solve
338 Generate Parentheses — 30 Medium Solve
339 Kth Largest Element in an Array — 30 Medium Solve
340 Largest Rectangle in Histogram — 40 Hard Solve
341 Last Stone Weight — 20 Easy Solve
342 Longest Increasing Subsequence — 30 Medium Solve
343 Maximum Depth of Binary Tree — 20 Easy Solve
344 Min Cost Climbing Stairs — 20 Easy Solve
345 Non-overlapping Intervals — 30 Medium Solve
346 Number of 1 Bits — 20 Easy Solve
347 Number of Connected Components in an Undirected Graph — 30 Medium Solve
348 Palindrome Partitioning — 30 Medium Solve
349 Partition Equal Subset Sum — 30 Medium Solve
350 Reorder List — 30 Medium Solve
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