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  1. using System;
  2. using System.Collections.Generic;
  3. using System.IO;
  4.  
  5. public class Test
  6. {
  7. 	public static void Main()
  8. 	{
  9. 		// your code goes here
  10. 		try
  11.             {
  12.                 String line;
  13.                 var inputLines = new List<String>();
  14.                 while((line = Console.ReadLine()) != null) {
  15.                   line = line.Trim();
  16.                   if (line != "")
  17.                     inputLines.Add(line);
  18.                 }
  19.                 var retVal = processData(inputLines);
  20.                 foreach(var res in retVal)
  21.                   Console.WriteLine(res);
  22.             }
  23.             catch (IOException ex)
  24.             {
  25.                 Console.WriteLine(ex.Message);
  26.             }
  27. 	}
  28.  
  29. 	public static List<String> processData(
  30.                                         IEnumerable<string> lines)
  31.         {
  32.             /* 
  33.              * Do not make any changes outside this method.
  34.              *
  35.              * Modify this method to process `array` as indicated
  36.              * in the question. At the end, return a List containing
  37.              * the appropriate values
  38.              *
  39.              * Do not print anything in this method
  40.              *
  41.              * Submit this entire program (not just this function)
  42.              * as your answer
  43.              */
  44.             List<String> retVal = new List<String>();
  45.             Dictionary<string, string> productDict = new Dictionary<string, string>();
  46.             foreach(var line in lines)
  47.             {
  48.                 string[] saleArray = line.Split(", ");
  49.                 if(productDict.ContainsKey(saleArray[3]))
  50.                 {
  51.                     int productPrice = int. Parse(productDict[saleArray[3]]);
  52.                     int price = int.Parse(saleArray[4]);
  53.                     if(price < productPrice)
  54.                         productDict[saleArray[3]] = productPrice.ToString();
  55.                 }
  56.                 else
  57.                 {
  58.                     productDict[saleArray[3]] = saleArray[4];
  59.                 }
  60.             }
  61.             List<string> discountedCustomer = new List<string>();
  62.             foreach(var discountedProd in productDict.Keys)
  63.             {
  64.                 foreach(var line in lines)
  65.                 {
  66.                     string[] saleArray = line.Split(", ");
  67.                     if(discountedProd == saleArray[3] && productDict[discountedProd] == saleArray[4])
  68.                     {
  69.                         discountedCustomer.Add(saleArray[0]);
  70.                     }
  71.                 }
  72.             }
  73.             return retVal;
  74.         }
  75. }
Success #stdin #stdout 0.02s 15552KB
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https://ideone.com/lqsCXz
language:
C# (gmcs 5.20.1)
created:
3 years ago
visibility:
public

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