t_102_332_reconstruct_itinerary

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Published: May 31, 2023 License: Apache-2.0 Imports: 1 Imported by: 0

README

https://leetcode.cn/problems/reconstruct-itinerary/
332. 重新安排行程
困难

给你一份航线列表 tickets ,其中 tickets[i] = [fromi, toi] 表示飞机出发和降落的机场地点。请你对该行程进行重新规划排序。

所有这些机票都属于一个从 JFK(肯尼迪国际机场)出发的先生,所以该行程必须从 JFK 开始。如果存在多种有效的行程,请你按字典排序返回最小的行程组合。

    例如,行程 ["JFK", "LGA"] 与 ["JFK", "LGB"] 相比就更小,排序更靠前。

假定所有机票至少存在一种合理的行程。且所有的机票 必须都用一次 且 只能用一次。

 

示例 1:

输入:tickets = [["MUC","LHR"],["JFK","MUC"],["SFO","SJC"],["LHR","SFO"]]
输出:["JFK","MUC","LHR","SFO","SJC"]

示例 2:

输入:tickets = [["JFK","SFO"],["JFK","ATL"],["SFO","ATL"],["ATL","JFK"],["ATL","SFO"]]
输出:["JFK","ATL","JFK","SFO","ATL","SFO"]
解释:另一种有效的行程是 ["JFK","SFO","ATL","JFK","ATL","SFO"] ,但是它字典排序更大更靠后。

 

提示:

    1 <= tickets.length <= 300
    tickets[i].length == 2
    fromi.length == 3
    toi.length == 3
    fromi 和 toi 由大写英文字母组成
    fromi != toi

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