JS w/ regexp
function error_printer(s) { const init_len = s.length; const err_len = s.replace(/[a-m]/g, "").length; return `${err_len}/${init_len}`; }
Python w/o regexp
def error_printer(s) : init_len = len(s) err_len = len([e for e in s if ord(e) < ord('a') or ord(e) > ord('m')]) return str(err_len) + "/" + str(init_len)
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JS w/ regexp
Python w/o regexp