Solution for 401-500


# Name Difficulty Tags
401 Binary Watch Easy
402 Remove K Digits Medium
403 Frog Jump Hard
404 Sum of Left Leaves Easy Tree
405 Convert a Number to Hexadecimal Easy
406 Queue Reconstruction by Height Medium
407 Trapping Rain Water II Hard
409 Longest Palindrome Easy
410 Split Array Largest Sum Hard
412 Fizz Buzz Easy
413 Arithmetic Slices Medium
414 Third Maximum Number Easy
415 Add Strings Easy
416 Partition Equal Subset Sum Medium
417 Pacific Atlantic Water Flow Medium
419 Battleships in a Board Medium
420 Strong Password Checker Hard
421 Maximum XOR of Two Numbers in an Array Medium
423 Reconstruct Original Digits from English Medium
424 Longest Repeating Character Replacement Medium
426 Convert Binary Search Tree to Sorted Doubly Linked List Medium Linked List | Divide an Conquer | Tree
427 Construct Quad Tree Medium
428 Serialize and Deserialize N-ary Tree Hard Tree
429 N-ary Tree Level Order Traversal Medium Tree | Breadth-first Search
430 Flatten a Multilevel Doubly Linked List Medium
431 Encode N-ary Tree to Binary Tree Hard Tree
432 All O`one Data Structure Hard
433 Minimum Genetic Mutation Medium
434 Number of Segments in a String Easy
435 Non-overlapping Intervals Medium
436 Find Right Interval Medium
437 Path Sum III Medium Tree
438 Find All Anagrams in a String Medium
440 K-th Smallest in Lexicographical Order Hard
441 Arranging Coins Easy
442 Find All Duplicates in an Array Medium
443 String Compression Medium
444 Sequence Reconstruction Medium
445 Add Two Numbers II Medium
446 Arithmetic Slices II - Subsequence Hard
447 Number of Boomerangs Medium
448 Find All Numbers Disappeared in an Array Easy
449 Serialize and Deserialize BST Medium Tree
450 Delete Node in a BST Medium Tree
451 Sort Characters By Frequency Medium
452 Minimum Number of Arrows to Burst Balloons Medium
453 Minimum Moves to Equal Array Elements Easy
454 4Sum II Medium
455 Assign Cookies Easy
456 132 Pattern Medium
457 Circular Array Loop Medium
458 Poor Pigs Hard
459 Repeated Substring Pattern Easy
460 LFU Cache Hard
461 Hamming Distance Easy
462 Minimum Moves to Equal Array Elements II Medium
463 Island Perimeter Easy
464 Can I Win Medium
466 Count The Repetitions Hard
467 Unique Substrings in Wraparound String Medium
468 Validate IP Address Medium
470 Implement Rand10() Using Rand7() Medium
472 Concatenated Words Hard
473 Matchsticks to Square Medium
474 Ones and Zeroes Medium
475 Heaters Medium
476 Number Complement Easy
477 Total Hamming Distance Medium
478 Generate Random Point in a Circle Medium
479 Largest Palindrome Product Hard
480 Sliding Window Median Hard
481 Magical String Medium
482 License Key Formatting Easy
483 Smallest Good Base Hard
485 Max Consecutive Ones Easy
486 Predict the Winner Medium
488 Zuma Game Hard
491 Increasing Subsequences Medium
492 Construct the Rectangle Easy
493 Reverse Pairs Hard
494 Target Sum Medium
495 Teemo Attacking Medium
496 Next Greater Element I Easy
497 Random Point in Non-overlapping Rectangles Medium
498 Diagonal Traverse Medium
500 Keyboard Row Easy