Question

I have a string like

"tom: 1, john: 3, timmy: 5, cid: 8, ad: 88, hid: 99, mn: 33"

i want to add line break after 3 commas each

"tom: 1, john: 3, timmy: 5, </br> cid: 8, ad: 88, hid: 99, </br> mn: 33"

Answer 1

I believe for loop would be the most straightforward and clear solution but it is interesting to do it using LINQ:

string input = "tom: 1, john: 3, timmy: 5, cid: 8, ad: 88, hid: 99, mn: 33";
char delimiter = ',';
var allParts = input.Split(delimiter);
string result = allParts.Select((item, index) => (index != 0 && (index+1) % 3 == 0)
                    ? item + delimiter + " </br>"
                    : index != allParts.Count() - 1 ? item + delimiter : item)
                    .Aggregate((i, j) => i + j);

// result (without a comma after the last item)
// "tom: 1, john: 3, timmy: 5, </br> cid: 8, ad: 88, hid: 99, </br> mn: 33"