How to append the string to variable only if they are unique strings

[Anonymous]

How to append the string to variable only if they are unique strings

[PrasadAthalye]

• Declare an Array variable.
• Loop through strings and inside the loop check condition if string exist in array. If not add to array.
• Finally Loop through array and use append to strings to generate required string.

[Anonymous]

I need it to be in string format for further use in the flow. so i wont be able to use the array option. also im not sure how to check if string exist in array. can you solve both these problems please.