leetcode_646. Maximum Length of Pair Chain ? 待解决
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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.
Example 1:
Input: [[1,2], [2,3], [3,4]]
Output: 2
Explanation: The longest chain is [1,2] -> [3,4]
Note:
The number of given pairs will be in the range [1, 1000].
提示:提交代码后,需要用简洁的语言解释一下代码思路~ 谢谢
历史题目和总结见公众号「每日一道算法题」
https://leetcode.com/problems/maximum-length-of-pair-chain/description/
思路:
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