int counter = 0;
string line;
Dictionary<string, int> dCount = new Dictionary<string, int>();
Dictionary<string, decimal> dSalTotal = new Dictionary<string, decimal>();
Dictionary<string, LinkedList> dDeps = new Dictionary<string, LinkedList>();
System.IO.StreamReader file =
    new System.IO.StreamReader("C:\\AAAChicagoEmployees\\Current_Employee_Names__Salaries__and_Position_Titles (1).csv");
while ((line = file.ReadLine()) != null)
{
    string[] parts = line.Split(',');
    try
    {
        string name = parts[2];
        name = Regex.Replace(name, "'", "");
        string dep = parts[3];
        decimal sal = decimal.Parse(parts[4].TrimStart('$')   );
        if ( dCount.ContainsKey(name  ) )
        {
            int a = dCount[name];
            a += 1;
            dCount[name] = a;
            decimal b = dSalTotal[name];
            b += sal;
            dSalTotal[name] = b;
            LinkedList c = dDeps[name];
            c.AddLast(dep);
            dDeps[name] = c;
        }
        else
        {
            dCount.Add(name, 1);
            dSalTotal.Add(name, sal);
            LinkedList newDepList = new LinkedList();
            newDepList.AddLast(dep);
            dDeps.Add(name, newDepList);
        }
    }
    catch (Exception x)
    {
        //header line
    }
    counter++;
}
file.Close();
Dictionary<string, decimal> dAveOrder = new Dictionary<string, decimal>();
foreach (KeyValuePair<string, int> item in dCount.OrderBy(key => key.Value))
{
    if (item.Value >= 10 && item.Value <= 50)
    {
        decimal aveSal = dSalTotal[item.Key] / item.Value;
        dAveOrder.Add(item.Key, aveSal);
    }
}
string json = "";
foreach (KeyValuePair<string, decimal> item in dAveOrder.OrderBy(key => key.Value))
{
    Hashtable frequencyHash = new Hashtable();
    LinkedList uniqueList = new LinkedList();
    foreach (var element in dDeps[item.Key])
    {
        if (uniqueList.Contains(element))
        {
            int elementCount = int.Parse(frequencyHash[element].ToString());
            elementCount++;
            frequencyHash[element] = elementCount;
        }
        else
        {
            uniqueList.AddLast(element);
            frequencyHash.Add(element, 1);
        }
    }
    int max = 0;
    string sMaxDep = "";
    foreach (string element in frequencyHash.Keys)
    {
        int iDep = int.Parse(frequencyHash[element].ToString());
        if (iDep > max)
        {
            max = iDep;
            sMaxDep = element;
        }
    }
    if (item.Key == "POLICE OFFICER")
    { }
    else
    {
        json += "[ '" + item.Key + "', " + dCount[item.Key] + "  , " + item.Value + " ,'" + Regex.Replace(sMaxDep, "'", "") + "' , " + item.Value + " ],\r\n";
    }
}
System.IO.StreamWriter fileWrite = new System.IO.StreamWriter("c:\\AAAChicagoEmployees\\data.txt");
fileWrite.WriteLine(json);
fileWrite.Close();

int counter = 0; string line; Dictionary<string, int> dCount = new Dictionary<string, int>(); Dictionary<string, decimal> dSalTotal = new Dictionary<string, decimal>(); Dictionary<string, LinkedList> dDeps = new Dictionary<string, LinkedList>(); System.IO.StreamReader file = new System.IO.StreamReader("C:\\AAAChicagoEmployees\\Current_Employee_Names__Salaries__and_Position_Titles (1).csv"); while ((line = file.ReadLine()) != null) { string[] parts = line.Split(','); try { string name = parts[2]; name = Regex.Replace(name, "'", ""); string dep = parts[3]; decimal sal = decimal.Parse(parts[4].TrimStart('$') ); if ( dCount.ContainsKey(name ) ) { int a = dCount[name]; a += 1; dCount[name] = a; decimal b = dSalTotal[name]; b += sal; dSalTotal[name] = b; LinkedList c = dDeps[name]; c.AddLast(dep); dDeps[name] = c; } else { dCount.Add(name, 1); dSalTotal.Add(name, sal); LinkedList newDepList = new LinkedList(); newDepList.AddLast(dep); dDeps.Add(name, newDepList); } } catch (Exception x) { //header line } counter++; } file.Close(); Dictionary<string, decimal> dAveOrder = new Dictionary<string, decimal>(); foreach (KeyValuePair<string, int> item in dCount.OrderBy(key => key.Value)) { if (item.Value >= 10 && item.Value <= 50) { decimal aveSal = dSalTotal[item.Key] / item.Value; dAveOrder.Add(item.Key, aveSal); } } string json = ""; foreach (KeyValuePair<string, decimal> item in dAveOrder.OrderBy(key => key.Value)) { Hashtable frequencyHash = new Hashtable(); LinkedList uniqueList = new LinkedList(); foreach (var element in dDeps[item.Key]) { if (uniqueList.Contains(element)) { int elementCount = int.Parse(frequencyHash[element].ToString()); elementCount++; frequencyHash[element] = elementCount; } else { uniqueList.AddLast(element); frequencyHash.Add(element, 1); } } int max = 0; string sMaxDep = ""; foreach (string element in frequencyHash.Keys) { int iDep = int.Parse(frequencyHash[element].ToString()); if (iDep > max) { max = iDep; sMaxDep = element; } } if (item.Key == "POLICE OFFICER") { } else { json += "[ '" + item.Key + "', " + dCount[item.Key] + " , " + item.Value + " ,'" + Regex.Replace(sMaxDep, "'", "") + "' , " + item.Value + " ],\r\n"; } } System.IO.StreamWriter fileWrite = new System.IO.StreamWriter("c:\\AAAChicagoEmployees\\data.txt"); fileWrite.WriteLine(json); fileWrite.Close();