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25 lines
468 B
Python
25 lines
468 B
Python
def dencrypt(s, n):
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out = ''
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for c in s:
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if c >= 'A' and c <= 'Z':
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out += chr(ord('A') + (ord(c) - ord('A') + n) % 26)
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elif c >= 'a' and c <= 'z':
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out += chr(ord('a') + (ord(c) - ord('a') + n) % 26)
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else:
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out += c
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return out
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def main():
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s0 = 'HELLO'
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s1 = dencrypt(s0, 13)
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print(s1) # URYYB
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s2 = dencrypt(s1, 13)
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print(s2) # HELLO
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if __name__ == '__main__':
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main()
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