用于加密/解密段落的Caesar密码程序

def caesar_encrypt(text, shift):
    result = ""

    for i in range(len(text)):
        char = text[i]

        # 加密大写字母
        if char.isupper():
            result += chr((ord(char) + shift - 65) % 26 + 65)

        # 加密小写字母
        else:
            result += chr((ord(char) + shift - 97) % 26 + 97)

    return result

def caesar_decrypt(text, shift):
    return caesar_encrypt(text, -shift)

# 测试
text = "HELLO WORLD"
shift = 4
encrypted = caesar_encrypt(text, shift)
decrypted = caesar_decrypt(encrypted, shift)

print("原文: " + text)
print("加密: " + encrypted)
print("解密: " + decrypted)