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  • \$\begingroup\$ wait. does the lowercase/uppercase check not cost anything??? \$\endgroup\$ Commented Jan 22, 2019 at 7:58
  • \$\begingroup\$ i mean, it can handle both lowercase and uppercase at no cost to bytecount?! \$\endgroup\$ Commented Jan 22, 2019 at 9:16
  • \$\begingroup\$ Ah ok.. ch-70%32 ? : to '0'... 64 and 96 are multiple of 32 so 70-6 and 102-6 %32 . \$\endgroup\$ Commented Jan 22, 2019 at 10:15
  • 1
    \$\begingroup\$ you don't actually have to handle both, so 64 \$\endgroup\$ Commented Jan 23, 2019 at 4:53