在职，长期，每日一题

447. Number of Boomerangs #20180716

422. Valid Word Square #20180716

777. Swap Adjacent in LR String #20180717

486. Predict the Winner #20180718

833. Find And Replace in String #20180718

215. Kth Largest Element in an Array #20180718

324. Wiggle Sort II #20180718

373. Find K Pairs with Smallest Sums #20180718

792. Number of Matching Subsequences #20180718

444. Sequence Reconstruction #20180719

300题/305天

604. Design Compressed String Iterator #20180719

652. Find Duplicate Subtrees #20180719

802. Find Eventual Safe States #20180719

503. Next Greater Element II #20180719

658. Find K Closest Elements #20180720

421. Maximum XOR of Two Numbers in an Array #20180720

348. Design Tic-Tac-Toe #20180720

379. Design Phone Directory #20180720

309. Best Time to Buy and Sell Stock with Cooldown #20180720

859. Buddy Strings #20180720

783. Minimum Distance Between BST Nodes #20180720

551. Student Attendance Record I #20180720

402. Remove K Digits #20180720

370. Range Addition #20180721

408. Valid Word Abbreviation #20180721

501. Find Mode in Binary Search Tree #20180721

377. Combination Sum IV #20180721

530. Minimum Absolute Difference in BST #20180721

356. Line Reflection #20180722

378. Kth Smallest Element in a Sorted Matrix #20180722

287. Find the Duplicate Number #20180722

380. Insert Delete GetRandom O(1) #20180722

788. Rotated Digits #20180723

487. Max Consecutive Ones II #20180723

448. Find All Numbers Disappeared in an Array #20180723

397. Integer Replacement #20180723

474. Ones and Zeroes #20180723

398. Random Pick Index #20180724

382. Linked List Random Node #20180724

846. Hand of Straights #20180724

855. Exam Room #20180724

374. Guess Number Higher or Lower #20180724

535. Encode and Decode TinyURL #20180725

313. Super Ugly Number #20180725

331. Verify Preorder Serialization of a Binary Tree #20180725

326. Power of Three #20180725

541. Reverse String II #20180725

357. Count Numbers with Unique Digits #20180726

581. Shortest Unsorted Continuous Subarray #20180726

702. Search in a Sorted Array of Unknown Size #20180726

533. Lonely Pixel II #20180726

779. K-th Symbol in Grammar #20180726

481. Magical String #20180727

758. Bold Words in String #20180727

506. Relative Ranks #20180727

520. Detect Capital #20180727

526. Beautiful Arrangement #20180727

790. Domino and Tromino Tiling #20180728

708. Insert into a Cyclic Sorted List #20180729

853. Car Fleet #20180729

845. Longest Mountain in Array #20180729

583. Delete Operation for Two Strings #20180729

643. Maximum Average Subarray I #20180729

644. Maximum Average Subarray II #20180729

809. Expressive Words #20180729

678. Valid Parenthesis String #20180729

200. Number of Islands #20180730

305. Number of Islands II #20180730

685. Redundant Connection II #20180731

765. Couples Holding Hands #20180731

430. Flatten a Multilevel Doubly Linked List #20180731

803. Bricks Falling When Hit #20180801

839. Similar String Groups #20180801

10. Regular Expression Matching #20180802

665. Non-decreasing Array #20180802

801. Minimum Swaps To Make Sequences Increasing #20180803

51. N-Queens #20180805

1. Two Sum #20180805

167. Two Sum II - Input array is sorted #20180805

611. Valid Triangle Number #20180807

52. N-Queens II #20180807

323. Number of Connected Components in an Undirected Graph #20180808

Find the Weak Connected Component in the Directed Graph #20180808

200. Number of Islands #20180809

305. Number of Islands II #20180809

Heapify #20180809

42. Trapping Rain Water #20180809

683. K Empty Slots #20180810

304. Range Sum Query 2D - Immutable #20180810

303. Range Sum Query - Immutable #20180810

407. Trapping Rain Water II #20180810

295. Find Median from Data Stream #20180811

31. Next Permutation #20180811

Prev Permutation #20180811

746. Min Cost Climbing Stairs #20180811

337. House Robber III #20180811

198. House Robber #20180812

213. House Robber II #20180812

480. Sliding Window Median #20180812

91. Decode Ways #20180812