public void AddToList(LetterCount lc)
{
// if the alphabet string still contains the requested letter, we don't have an entry for it
// so we can add it
// replace the given letter in the alphabet string with a space
// so next time we don't add the object again
if (alphabet.Contains(lc.letter))
{
counts.Add(lc);
alphabet = alphabet.Replace(lc.letter, ' ');
}
}
public string total_letter_count(string s)
{
// deserialize the JSON payload to a key/value pair object
KeyValuePair keyValuePair = JsonConvert.DeserializeObject <KeyValuePair>(s);
// declare a new LetterCounts object to hold a list of all letters and their counts
LetterCounts letterCounts = new LetterCounts();
// set the key (??)
letterCounts.key = keyValuePair.key;
// iterate through each letter in the text
foreach (char c in keyValuePair.value)
{
// see if the LetterCounts list already contains the letter
// only get counts for alphabetic characters
if (char.IsLetter(c))
{
// get the letter count using a LINQ query
int count = (from n in keyValuePair.value
where char.ToLower(n) == char.ToLower(c) // match all cases
select n).Count();
// each letter and its count will be a new object (LetterCount)
LetterCount letterCount = new LetterCount();
// set the letter and get its count from a LINQ query on the entire text value
letterCount.letter = char.ToLower(c);
letterCount.count = count;
// add the LetterCount object to the LetterCounts list
letterCounts.AddToList(letterCount);
}
}
// turn the LetterCounts object back into a JSON payload
return(JsonConvert.SerializeObject(letterCounts, Formatting.Indented));
}
