都答出来 也是拒 难道就因为给了hint？
1. ninja: paint house大变种. n houses, k colors. neighboring houses cannot be painted with the same color.
NOTICE: neighboring relationship is given by adjacent list which means a house may have multiple neighbors.. 1point3acres.com/bbs
2. ninja: 放水。 reverse Linkedlist (both recursive and iterative). buy and sell stock I, II (output transaction)
3. Jedi. behavior questions/research. coding: clone graph. give a class Graph, return 一个clone的
4. Pirate. Design Wikipedia crawler.
followup 1: No global status.
followup 2: deal with machine failure
followup 3: make the wiki site unaware of this crawler.
补充内容 (2015-12-7 05:27):. visit 1point3acres.com for more.