[LeetCode] Sequence Reconstruction 序列重建

Posted Grandyang

tags:

篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了[LeetCode] Sequence Reconstruction 序列重建相关的知识,希望对你有一定的参考价值。

 

Check whether the original sequence org can be uniquely reconstructed from the sequences in seqs. The org sequence is a permutation of the integers from 1 to n, with 1 ≤ n ≤ 104. Reconstruction means building a shortest common supersequence of the sequences in seqs (i.e., a shortest sequence so that all sequences in seqs are subsequences of it). Determine whether there is only one sequence that can be reconstructed from seqs and it is the org sequence.

Example 1:

Input:
org: [1,2,3], seqs: [[1,2],[1,3]]

Output:
false

Explanation:
[1,2,3] is not the only one sequence that can be reconstructed, because [1,3,2] is also a valid sequence that can be reconstructed.

Example 2:

Input:
org: [1,2,3], seqs: [[1,2]]

Output:
false

Explanation:
The reconstructed sequence can only be [1,2].

Example 3:

Input:
org: [1,2,3], seqs: [[1,2],[1,3],[2,3]]

Output:
true

Explanation:
The sequences [1,2], [1,3], and [2,3] can uniquely reconstruct the original sequence [1,2,3].

Example 4:

Input:
org: [4,1,5,2,6,3], seqs: [[5,2,6,3],[4,1,5,2]]

Output:
true

 

s

 

以上是关于[LeetCode] Sequence Reconstruction 序列重建的主要内容,如果未能解决你的问题,请参考以下文章

LeetCode(60):Permutation Sequence

LeetCode: Longest Consecutive Sequence [128]

[Lintcode]124. Longest Consecutive Sequence/[Leetcode]128. Longest Consecutive Sequence

一天一道LeetCode#60. Permutation Sequence.

LeetCode Verify Preorder Sequence in Binary Search Tree

LeetCode: 60. Permutation Sequence(Medium)