Brainfuckとは
命令が8個(><+-.,[]
)しかないプログラミング言語
def brainfuck(s): a = [0] * 10 ptr = 0 i = 0 l = len(s) while i < l: if s[i] == '>': ptr += 1 elif s[i] == '<': ptr -= 1 elif s[i] == '+': a[ptr] += 1 elif s[i] == '-': a[ptr] -= 1 elif s[i] == '.': print(chr(a[ptr]), end='') elif s[i] == ',': a[ptr] = ord(input()[0]) elif s[i] == '[': if a[ptr] == 0: depth = 1 i += 1 while depth > 0: if s[i] == '[': depth += 1 elif s[i] == ']': depth -= 1 i += 1 elif s[i] == ']': if a[ptr] != 0: depth = 1 i -= 1 while depth > 0: if s[i] == '[': depth -= 1 elif s[i] == ']': depth += 1 i -= 1 i += 1 if __name__ == '__main__': S = '++++++++[>+++++++++<-]>.<+++++[>++++++<-]>-.<++[>+++<-]>+..+++.<++++++[>----<-]>.<++++++[>++++<-]>.+++.------.--------.' brainfuck(S)
実行するとハローワールドします。