Given a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telephon... Read More
posted @ 2014-08-23 17:50 Xylophone Views(436) Comments(0) Diggs(0)
Divide two integers without using multiplication, division and mod operator.常常出现大的负数,无法用abs()转换成正数的情况class Solution{private: vector f;public: in... Read More
posted @ 2014-08-23 17:04 Xylophone Views(266) Comments(0) Diggs(0)