Toolliyo Practice

Problems explorer

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

8773 problems

# Title Topics Acceptance Pts Difficulty
501 Longest Palindromic Substring — 30 Medium Solve
502 Maximum Depth of Binary Tree — 20 Easy Solve
503 Median of Two Sorted Arrays — 40 Hard Solve
504 Meeting Rooms — 20 Easy Solve
505 Meeting Rooms II — 30 Medium Solve
506 Merge Intervals — 30 Medium Solve
507 Min Cost to Connect All Points — 30 Medium Solve
508 Minimum Window Substring — 40 Hard Solve
509 Multiply Strings — 30 Medium Solve
510 N-Queens — 40 Hard Solve
511 N-Queens — 40 Hard Solve
512 Palindrome Partitioning — 30 Medium Solve
513 Partition Equal Subset Sum — 30 Medium Solve
514 Plus One — 20 Easy Solve
515 Reconstruct Itinerary — 40 Hard Solve
516 Redundant Connection — 30 Medium Solve
517 Reorder List — 30 Medium Solve
518 Reverse Linked List — 20 Easy Solve
519 Rotting Oranges — 30 Medium Solve
520 Search a 2D Matrix — 30 Medium Solve
521 Search a 2D Matrix — 30 Medium Solve
522 Sliding Window Maximum — 40 Hard Solve
523 Spiral Matrix — 30 Medium Solve
524 Subsets — 30 Medium Solve
525 Surrounded Regions — 30 Medium Solve
526 Swim in Rising Water — 40 Hard Solve
527 Top K Frequent Elements — 30 Medium Solve
528 Two Sum II - Input Array Is Sorted — 30 Medium Solve
529 Valid Anagram — 20 Easy Solve
530 Valid Anagram — 20 Easy Solve
531 Valid Palindrome — 20 Easy Solve
532 Valid Parenthesis String — 30 Medium Solve
533 Walls and Gates — 30 Medium Solve
534 Word Break — 30 Medium Solve
535 Word Ladder — 40 Hard Solve
536 Word Search — 30 Medium Solve
537 3Sum — 30 Medium Solve
538 Binary Tree Right Side View 0% 30 Medium Solve
539 Car Fleet — 30 Medium Solve
540 Climbing Stairs — 20 Easy Solve
541 Coin Change — 30 Medium Solve
542 Combination Sum — 30 Medium Solve
543 Count Good Nodes in Binary Tree — 30 Medium Solve
544 Counting Bits — 20 Easy Solve
545 Design Twitter — 30 Medium Solve
546 Design Twitter — 30 Medium Solve
547 Diameter of Binary Tree — 20 Easy Solve
548 Encode and Decode Strings — 30 Medium Solve
549 Encode and Decode Strings — 30 Medium Solve
550 Find the Duplicate Number — 30 Medium Solve
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