static void Main(string[] args)
{
string testString = "All work and no play is no work no fun and no play";
FoundValue theNearestRepeatedWordsFound = FindTheNearestRepeatedWordsFound(testString);
Console.WriteLine(theNearestRepeatedWordsFound.word + ", " + theNearestRepeatedWordsFound.distance);
Console.ReadKey();
}
static public FoundValue FindTheNearestRepeatedWordsFound(string sentence)
{
FoundValue theWord;
IDictionary <string, FoundValue> theWords = new Dictionary <string, FoundValue>();
int count = 0;
string[] words = sentence.Split(' ');
foreach (string eachWord in words)
{
FoundValue tmpWord = new FoundValue();
tmpWord.word = eachWord;
tmpWord.count = count;
if (theWords.ContainsKey(eachWord))
{
FoundValue foundWord = theWords[eachWord];
//foundWord.distance = count - foundWord.count;
if (theWords[eachWord].distance == 0)
{ // this is added.
theWords[eachWord].distance = count - foundWord.count;
}
else //if (theWords[eachWord].distance != 0)
{
theWords[eachWord].distance = Math.Min(theWords[eachWord].distance, count - foundWord.count);
}
theWords[eachWord].count = count;
//theWords.Add(eachWord, tmpWord); // a big mistake here.
}
else
{
tmpWord.distance = 0;
theWords.Add(eachWord, tmpWord); // 0 means no repeat
}
count++;
}
theWord = new FoundValue();
for (int i = 0; i < theWords.Count - 1; i++)
{
int min = theWords.Count;
FoundValue eachWord = theWords.ElementAt(i).Value;
if (eachWord.distance > 1 && eachWord.distance < min)
{
min = eachWord.distance;
theWord = eachWord;
}
}
return(theWord);
}