How can I solve this assignment:
Given string in form "3,9,13,4,42" convert to list and for each element calculate his square. Then join that squares to string and write to console. Input
`string = "3,9,13,4,42"`
Output
`string = "9,81,169,16,1764"`
I tryed this:
string = "3,9,13,4,42"
l = [int(i) for i in string.split(',')]
for i in l:
i = i**2
Now I have all squares but how to join them in string?