I was thinking blocks of 10 because I can itoa(the number of tens) and then concat with the subset of 0, 1, 2, 3, 4, etc. that I care about. I guess with blocks

I was thinking blocks of 10 because I can itoa(the number of tens) and then concat with the subset of 0, 1, 2, 3, 4, etc. that I care about. I guess with blocks of 15 you just need to do two itoas, and worry about two types of block vs 3.