/// <summary>
/// Finds memes by tags
/// </summary>
/// <param name="tagsString">Tags separated by a space</param>
/// <returns>If an empty string is passed, it will return all memes.
/// Otherwise, it will return memes that have at least one required tag</returns>
public List <Meme> FindByTags(string tagsString)
{
string[] requiredTags = tagsString.Split(' ', StringSplitOptions.RemoveEmptyEntries);
var result = new List <Meme>();
if (requiredTags.Length == 0)
{
return(Memes);
}
foreach (string tag in requiredTags)
{
if (MemesWithTags.ContainsKey(tag))
{
foreach (Meme meme in MemesWithTags[tag])
{
if (!(result.Contains(meme)))
{
result.Add(meme);
}
}
}
}
return(result);
}
public void UpdateDictionary(Meme meme)
{
string[] tags = meme.Tags.Split();
foreach (string tag in tags)
{
if (!(MemesWithTags.ContainsKey(tag)))
{
MemesWithTags.Add(tag, new List <Meme>());
}
MemesWithTags[tag].Add(meme);
}
}