neuTblue的专栏

Career Cup 刷题活动开始..............第一题：Implement an algorithm to determine if a string has all unique characters  What if you can not use additional data structures?思想：基本思想还是使用哈希，对数组中的每个元素对应到哈希表中并

Problem: Design an algorithm and write code to remove the duplicate characters in a string  without using any additional buffer  NOTE: One or two additional variables are fine.  An extra copy of the a

Problem: Write code to reverse a C-Style String  (C-String means that “abcd” is represented as  five characters, including the null character )Solution:  代码在下面分析（1） 确定两个指针分别指向字符串的头和尾部，交换这两个指针所指向