[bullant]

1) put all the letters and characters for the username in a string

2) generate a random number between 6-10

3) then generate a random number between 0 and the length-1 of the string in 1)

4) get the character (using charAt()) in the string in 1) at the index of the random number in 3)

5) repeat steps 3-4 for the number of times of the random number in 2), appending the new character to the previous ones.