4 轮各45分钟.
每轮有5-10 分钟BQ
没考系统设计
第一轮:
LC 189. Rotate an array x times. Do this in place.
第二轮:
LC 28. Basic string matching question - implement strStr()
LC 134 Gas Station problem
第三轮:
LC 959变种: Pancake sorting. Not the exact same question, but highly similar.
第四轮:
Binary Tree Iterator design
LC 116 Populating Next Right Pointers in Each Node
gas station problem 没答好，别的都挺简单