public static void fnTopKFrequentWords()
{
//string[] arr = new string[] { "geek", "i", "love", "leetcode", "i", "love", "coding", "geek" };
//string[] arr = new string[] { "the", "day", "is", "sunny", "the", "the", "the", "sunny", "is", "is", };
string[] arr = new string[] { "i", "love", "leetcode", "i", "love", "coding" };
Dictionary <string, int> dict = new Dictionary <string, int>();
int k = 3;
for (int i = 0; i < arr.Length; i++)
{
if (!dict.ContainsKey(arr[i]))
{
dict.Add(arr[i], 0);
}
dict[arr[i]]++;
}
MinHeapRecurse <StringToCount> minHeap = new MinHeapRecurse <StringToCount>(k, new StringToCountComparer());
foreach (var item in dict)
{
StringToCount sc = new StringToCount(item.Key, item.Value);
if (minHeap.Size() == k)
{
if (minHeap.Peek().count < sc.count ||
(minHeap.Peek().count < sc.count && sc.str.CompareTo(minHeap.Peek().str) < 0))
{
minHeap.DeleteMin();
}
}
minHeap.Insert(sc);
}
List <string> strList = new List <string>();
int l = minHeap.Size();
while (l-- > 0)
{
strList.Add(minHeap.DeleteMin().str);
}
strList.Reverse();
for (int i = 0; i < strList.Count; i++)
{
Console.Write(strList[i] + " ");
}
Console.WriteLine();
}
protected override void Execute(CodeActivityContext executionContext)
{
ITracingService tracer = executionContext.GetExtension <ITracingService>();
try
{
string stringToCount = StringToCount.Get(executionContext);
string[] words = stringToCount.Trim().Split(' ');
Count.Set(executionContext, words.Length);
}
catch (Exception ex)
{
tracer.Trace("Exception: {0}", ex.ToString());
}
}
protected override void ExecuteCrmWorkFlowActivity(CodeActivityContext context, LocalWorkflowContext localContext)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (localContext == null)
{
throw new ArgumentNullException(nameof(localContext));
}
string stringToCount = StringToCount.Get(context);
string[] words = stringToCount.Trim().Split(' ');
Count.Set(context, words.Length);
}