摘要：
You are climbing a stair case. It takes n steps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you cli... 阅读全文
摘要：
Given two sorted integer arrays A and B, merge B into A as one sorted array. Note:You may assume that A has enough space (size that is greater or equa... 阅读全文
摘要：
1. 在Linux系统中，以 文件 方式访问设备 。2. Linux内核引导时，从文件/etc/fstab中读取要加载的文件系统。3. Linux文件系统中每个文件用i字节来标识。4. 全部磁盘块由四个部分组成，分别为引导块、i字节表块、专用块、数据储存块。5. 链接分为： 硬链接 和 符号链接 。... 阅读全文