2015年1月14日
【Leetcode】【Easy】Valid Parentheses
摘要： Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must close in the correct ... 阅读全文
posted @ 2015-01-14 23:41 胡潇 阅读(154) 评论(0) 推荐(0)
【Leetcode】【Easy】Climbing Stairs
摘要： You are climbing a stair case. It takesnsteps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb... 阅读全文
posted @ 2015-01-14 04:06 胡潇 阅读(158) 评论(0) 推荐(0)