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IBM DS entry level 2024 OA

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2023(7-9月) 分析|数据科学类 硕士 全职@ibm - 内推 - 在线笔试  | 😐 Neutral 😐 AverageOther | 应届毕业生

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60 mins 2道题. 1point3acres.com
一道coding一道database
都是地里没见过的题 (上传不了图片 粘文字吧)
Question 1:
.. .--
Packets are sent to different ports on a computer system based on the hash of their packet ID. The value of the hash is as given below:
Hash = mod (packet_id, numberOfPorts) where mod is the
modulus operator and takes the mod of first operand by second operand.
The ports are numbered from 0 to (number of ports) - 1, and a packet is initially sent to the port that has the port number equal to the hash of its packet ID. Each port requires t seconds to process an arriving packet. If a port is currently processing a packet, any arriving packet is rerouted to the next port number, and so on. The list of ports is circular. If a packet arrives at the last port and it is busy, it is rerouted to the first port. Given a list IDs of n packets that arrive 1 per second, find the port to which each packet is finally sent. The first packet is
sent at second t = 1.
Each port requires a time to send a packet. If a port is currently sending a packet, this packet is then sent to the next port number, and so on. Given a list IDs of n packets that arrive 1 per second, find the port to which each packet is finally sent. The first packet is sent at.1point3acres
time t = 1.
Example
numberOfPorts = 3
transmissionTime = 2
packetlds = [4, 7, 10, 6]
The destination ports
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hase events in May 2022. A purchase event has "buy" in the type field. The result should have the following columns: purchases.
• purchases - the total number of events of the "buy" type Only events of the type "buy" should be included in the report.
• Only events that occurred in May 2022 should be included in the report.

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