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 @ 2013-11-12 14:24 Step-BY-Step 阅读(129) 评论(0) 推荐(0) 编辑
