摘要:
Combination Sum (M) 题目 Given a set of candidate numbers (candidates) (without duplicates) and a target number (target), find all unique combinations i 阅读全文
摘要:
Count and Say (E) 题目 The count-and-say sequence is the sequence of integers with the first five terms as following: 1. 1 2. 11 3. 21 4. 1211 5. 111221 阅读全文