mhannsari
BAN USER
- 10
0of 0 votes
AnswersQuestion 2: Write code for the following: given a text file containing this information (Date the customer logged-in, Tab, Customer ID) Example: 04/11/2017 \t 0003 04/12/2017 \t 0003 04/13/2017 \t 0004 04/13/2017 \t 0003 04/13/2017 \t 0003 04/15/2017 \t 0004
- mhannsari in United States
How to get the list of those customers that log in on four consecutive days?
Please give good solution| Report Duplicate | Flag | PURGE
Amazon Java Developer - 6
0of 0 votes
AnswersQuestion 1: Given input file with the following set of strings, Download input file: https://www.google.com/basepages/producttype/taxonomy.en-US.txt
- mhannsari in United States
Example: Electronics Electronics > Arcade Equipment Electronics > Arcade Equipment > Basketball Arcade Games Electronics > Arcade Equipment > Pinball Machine Accessories Electronics > Arcade Equipment > Pinball Machines Electronics > Arcade Equipment > Skee-Ball Machines Electronics > Arcade Equipment > Video Game Arcade Cabinet Accessories Electronics > Arcade Equipment > Video Game Arcade Cabinets Electronics > Audio Electronics > Audio > Audio Accessories Electronics > Audio > Audio Accessories > Audio & Video Receiver Accessories Electronics > Audio > Audio Accessories > Headphone & Headset Accessories Electronics > Audio > Audio Accessories > Headphone & Headset Accessories > Headphone Cushions & Tips Electronics > Audio > Audio Accessories > Karaoke System Accessories
write a function that stores this information. Your data structure should be able to provide information as Electronics = 14 Electronics > Arcade Equipment = 7 Electronics > Arcade Equipment > Video Game Arcade Cabinets = 1 Electronics > Arcade Equipment > Skee-Ball Machines = 1| Report Duplicate | Flag | PURGE
Amazon Java Developer
Public static List<int> GetConsecutiveCustomer(string filepath)
{
var customeDateMap = new Dictionary<int,List<Date>>();
var streamReader = new StreamReader(new FileStream(filepath, FileMode.Open, FileAccess.Read), Encoding.UTF8);
var consecutiveCustomers = new HashSet<int>();
while((var line = streamReader.ReadLine()) != null)
{
var customerId = Int32.Parse(line.Split('\t')[1]);
var date = Date.Parse(line.Split('\t')[0]);
if(customeDateMap.ContainsKey(customerId)
{
if(customeDateMap[customerId].Length == 3)
{
customeDateMap[customerId].RemoveAt(2);
}
customeDateMap[customerId].Add(date);
if(!consecutiveCustomers.Contains(customerId))
{
if(customeDateMap[customerId].Length == 3
&& customeDateMap[customerId][0] == customeDateMap[customerId][1].AddDays(1)
&& customeDateMap[customerId][0] == customeDateMap[customerId][2].AddDays(2))
{
consecutiveCustomers.Add(customerId);
}
}
}
else
{
customeDateMap.Add(customerId, new List<date>(){date});
}
}
return consecutiveCustomers.ToList<int>();
}
how to run it from main method
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very hard but you are just amazing.
- mhannsari May 15, 2017i am not able to eliminate the error, as you use 'using', 'StreamReader', etc.
i am using java 7, still difficult to understand your code.