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ballerina

How to sort a string in Ballerina

i.e. from "cba" to "abc". Given that it seems the lang.string module lacks sorting support and the array:sort() function doesn't accept strings? Currently, my workaround involves converting the string to a string:Char[] and then using arrays:sort().

Solution

  • It is possible to convert the string to string:Char[] and do it.

    string str = "cdba";
string:Char[] arr = [];
foreach string:Char ch in str {
    arr.push(ch);
}
string sorted = string:'join("",...arr.sort());

    Alternatively, you could probably use a query expression.

    string str = "cdba";
string sorted = from string char in str order by char select char;