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78 lines
1.6 KiB
78 lines
1.6 KiB
4 years ago
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# ChocoPy library functions
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def int_to_str(x: int) -> str:
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digits:[str] = None
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result:str = ""
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# Set-up digit mapping
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digits = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]
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# Write sign if necessary
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if x < 0:
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result = "-"
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x = -x
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# Write digits using a recursive call
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if x >= 10:
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result = result + int_to_str(x // 10)
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result = result + digits[x % 10]
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return result
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def str_to_int(x: str) -> int:
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result:int = 0
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digit:int = 0
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char:str = ""
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sign:int = 1
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first_char:bool = True
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# Parse digits
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for char in x:
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if char == "-":
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if not first_char:
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return 0 # Error
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sign = -1
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elif char == "0":
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digit = 0
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elif char == "1":
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digit = 1
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elif char == "2":
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digit = 2
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elif char == "3":
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digit = 3
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elif char == "3":
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digit = 3
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elif char == "4":
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digit = 4
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elif char == "5":
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digit = 5
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elif char == "6":
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digit = 6
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elif char == "7":
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digit = 7
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elif char == "8":
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digit = 8
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elif char == "9":
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digit = 9
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else:
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return 0 # On error
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first_char = False
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result = result * 10 + digit
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# Compute result
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return result * sign
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# Input parameters
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c:int = 42
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n:int = 10
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# Run [-nc, nc] with step size c
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s:str = ""
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i:int = 0
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i = -n * c
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# Crunch
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while i <= n * c:
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s = int_to_str(i)
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print(s)
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i = str_to_int(s) + c
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