How do I convert my array to json and vice versa

Hi, I have one array. In that I am storing some random values like ["1","value","abc"]. Now I want to convert that array into json and again convert it into a string and needs to store in a variable.

After that again this string needs to be convert into JSON and that JSON should be convert into an array.

Can anyone help me?

construct.net/en/tutorials/c3-data-convert-example-3021/array-jsondictionary-6