分類：Leetcode | Hsing Yu = = We are the dreamers. We make it happen 'cause we can see it.

Easy ( 65 )

04-10

20. Valid Parentheses

Hard ( 17 )

04-09

1857. Largest Color Value in a Directed Graph

Medium ( 106 )

04-08

133. Clone Graph

04-07

1020. Number of Enclaves

04-06

1254. Number of Closed Islands

04-05

2439. Minimize Maximum of Array

04-04

2405. Optimal Partition of String

04-03

881. Boats to Save People