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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
401 Combination Sum II — 30 Medium Solve
402 Count Good Nodes in Binary Tree — 30 Medium Solve
403 Decode Ways — 30 Medium Solve
404 Distinct Subsequences — 40 Hard Solve
405 Evaluate Reverse Polish Notation — 30 Medium Solve
406 House Robber II — 30 Medium Solve
407 Last Stone Weight — 20 Easy Solve
408 Longest Increasing Subsequence — 30 Medium Solve
409 Lowest Common Ancestor of a Binary Search Tree — 30 Medium Solve
410 Network Delay Time — 30 Medium Solve
411 Partition Labels — 30 Medium Solve
412 Reconstruct Itinerary — 40 Hard Solve
413 Remove Nth Node From End of List — 30 Medium Solve
414 Set Matrix Zeroes — 30 Medium Solve
415 Spiral Matrix — 30 Medium Solve
416 Valid Palindrome — 20 Easy Solve
417 Binary Tree Maximum Path Sum — 40 Hard Solve
418 Combination Sum — 30 Medium Solve
419 Design Add and Search Words Data Structure — 30 Medium Solve
420 Gas Station — 30 Medium Solve
421 House Robber II — 30 Medium Solve
422 Interleaving String — 30 Medium Solve
423 Koko Eating Bananas — 30 Medium Solve
424 Longest Common Subsequence — 30 Medium Solve
425 Longest Increasing Subsequence — 30 Medium Solve
426 Longest Repeating Character Replacement — 30 Medium Solve
427 Max Area of Island — 30 Medium Solve
428 Min Cost Climbing Stairs — 20 Easy Solve
429 Minimum Interval to Include Each Query — 40 Hard Solve
430 Number of 1 Bits — 20 Easy Solve
431 Reverse Nodes in k-Group — 40 Hard Solve
432 Single Number — 20 Easy Solve
433 Contains Duplicate — 20 Easy Solve
434 Design Twitter — 30 Medium Solve
435 Edit Distance — 40 Hard Solve
436 Generate Parentheses — 30 Medium Solve
437 Interleaving String — 30 Medium Solve
438 Jump Game — 30 Medium Solve
439 K Closest Points to Origin — 30 Medium Solve
440 Longest Increasing Subsequence — 30 Medium Solve
441 Lowest Common Ancestor of a Binary Search Tree — 30 Medium Solve
442 Maximum Product Subarray — 30 Medium Solve
443 Multiply Strings — 30 Medium Solve
444 N-Queens — 40 Hard Solve
445 Non-overlapping Intervals — 30 Medium Solve
446 Redundant Connection — 30 Medium Solve
447 Reorder List — 30 Medium Solve
448 Valid Anagram — 20 Easy Solve
449 Binary Tree Maximum Path Sum — 40 Hard Solve
450 Coin Change 2 — 30 Medium Solve
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