c# - Get last 3 characters of string -

how can last 3 character out given string?

example input: am0122200204

expected result: 204

many ways can achieved.

simple approach should taking substring of input string.

var result = input.substring(input.length - 3); 

another approach using regular expression extract last 3 charcters.

var result = regex.match(input,@"(.{3})\s*$"); 

working demo