[OD Unified Examination (Paper B)] Message reordering, JAVA solution

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[Good News] Huawei OD Unified Examination (Paper B) question bank list (130 questions included), faster and more comprehensive question bank outline for Paper B

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• Huawei OD computer test (including paper B) real questions 2023 condensed version, 50 questions worth 100 points. If there is not much time until the computer-based test, just read this
• Huawei OD computer test (papers A and B) and computer test, the 200-point questions are organized as follows, which are necessary to achieve full marks.

Huawei OD computer test: packet reordering

Question description

Retransmission and reordering of packets is a commonly used reliability mechanism. There are a certain number of sub-messages in the retransmission buffer, and the order of each sub-message in the original message is known.