wzc1995

Purdue University


访客:249699


# 标题 难度 阅读
240 Search a 2D Matrix II 中等 696
241 Different Ways to Add Parentheses 中等 477
242 Valid Anagram 简单 371
257 Binary Tree Paths 简单 516
258 Add Digits 简单 390
260 Single Number III 中等 533
263 Ugly Number 简单 386
268 Missing Number 简单 516
279 Perfect Squares 中等 1159
283 Move Zeroes 简单 431
287 Find the Duplicate Number 中等 835
295 Find Median from Data Stream 困难 583
297 Serialize and Deserialize Binary Tree 困难 844
299 Bulls and Cows 中等 592
301 Remove Invalid Parentheses 困难 148
306 Additive Number 中等 491
307 Range Sum Query - Mutable 中等 452
309 Best Time to Buy and Sell Stock with Cooldown 中等 572
310 Minimum Height Trees 中等 426
315 Count of Smaller Numbers After Self 困难 620