Maximum Length of Pair Chain【双链的最大长度】
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一、题目
英文:Maximum Length of Pair Chain
中文:双链的最大长度
二、内容要求
英文:
You are given n
pairs of numbers. In every pair, the first number is always smaller than the second number.
Now, we define a pair (c, d)
can follow another pair (a, b)
if and only if b < c
. Chain of pairs can be formed in this fashion.
Given a set of pairs, find the length longest chain which can be formed. You needn't use up all the given pairs. You can select pairs in any order.
中文:给定一组数对,我们定义当且仅当b < c时,(c, d)可以链在(a, b)之后。求可以组成的最长数对链的长度。
三、示例
Input: [[1,2], [2,3], [3,4]]Output: 2Explanation: The longest chain is [1,2] -> [3,4]
四、代码
1.java代码
注:利用的lambda 表达式知识点,可看http://www.jianshu.com/p/85affe38ce5c
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