private static List <string> WordLetterPairs(string str)
{
List <string> list = new List <string>();
string[] strArray = Regex.Split(str, "\\s");
for (int index = 0; index < strArray.Length; ++index)
{
if (!string.IsNullOrEmpty(strArray[index]))
{
foreach (string str1 in SimilarityUtils.LetterPairs(strArray[index]))
{
list.Add(str1);
}
}
}
return(list);
}
public static double CompareStrings(string str1, string str2)
{
List <string> list1 = SimilarityUtils.WordLetterPairs(str1.ToUpper());
List <string> list2 = SimilarityUtils.WordLetterPairs(str2.ToUpper());
int num1 = 0;
int num2 = list1.Count + list2.Count;
for (int index1 = 0; index1 < list1.Count; ++index1)
{
for (int index2 = 0; index2 < list2.Count; ++index2)
{
if (list1[index1] == list2[index2])
{
++num1;
list2.RemoveAt(index2);
break;
}
}
}
return(2.0 * (double)num1 / (double)num2);
}