c# - Add one space after every two characters and add a character infront of every single character -



c# - Add one space after every two characters and add a character infront of every single character -

i want add together 1 space after every 2 characters, , add together character in front end of every single character.

this code:

string str2; str2 = str1.tochararray().aggregate("", (result, c) => result += ((!string.isnullorempty(result) && (result.length + 1) % 3 == 0) ? " " : "") + c.tostring());

i have no problems separating every 2 characters 1 space, how know if separated string has individual character, , add together character infront of character?

i understand question confusing i'm not sure how set want in words.. i'll give example:

i have string:

0123457

after separating every 2 characters space, i'll get:

01 23 45 7

i want add together 6 infront of 7.

note: numbers dependent on user's input, it's not same.

thanks.

i think asked for

string str1 = "3322356"; string str2; str2 = string.join(" ", str1.tochararray().aggregate("", (result, c) => result += ((!string.isnullorempty(result) && (result.length + 1) % 3 == 0) ? " " : "") + c.tostring()) .split(' ').tolist().select( x => x.length == 1 ? string.format("{0}{1}", int32.parse(x) - 1, x) : x).toarray());

result "33 22 35 56"

c# string

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