摘要：
华为2014校园招聘的机试题目 通过键盘输入一串小写字母(a~z)组成的字符串。请编写一个字符串压缩程序，将字符串中连续出席的重复字母进行压缩，并输出压缩后的字符串。 压缩规则： 1、仅压缩连续重复出现的字符。比如字符串"abcbc"由于无连续重复字符，压缩后的字符串还是"abcbc"。... 阅读全文
摘要：
Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).For example, this binary tree is symmetric: 1 /... 阅读全文
摘要：
Given a linked list, swap every two adjacent nodes and return its head. For example, Given 1->2->3->4, you should return the list as 2->1->4->3. ... 阅读全文