linq - Compare if the characters in a string are a subset of a second string in C# -


i'm working on game want check if characters of string contained in string. set first choice want account duplicates. example:

"met".iscontainedwithin("meet"); => true "meet".iscontainedwithin("met"); => false

a multi-set nice sounds c# doesn't have that. iteratively wondering if there simpler way (with linq perhaps). thanks!

edit:

i wasn't clear. want return true regardless of order of letters:

 "git".iscontainedwithin("light")=> true  "pall".iscontainedwithin("lamp")=> false

this works me:

public static bool iscontainedwithin(this string @this, string container) {     var lookup = container.tolookup(c => c);     return @this.tolookup(c => c).all(c => lookup[c.key].count() >= c.count()); }

i tested this:

var tests = new [] {     "met".iscontainedwithin("meet"),     "meet".iscontainedwithin("met"),     "git".iscontainedwithin("light"),     "pall".iscontainedwithin("lamp"), };

i got these results:

true  false  true  false

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