擅长:python、mysql、java
<p>如果它是可逆的,我建议以相反的格式存储(50:'ABC')。同时,想象一个给定代码以前没有编码的情况。在</p>
<pre><code>encode_history = {}
def encode(str):
"""some calculations which lead to the code"""
... your calculations ...
encode_history[code] = str
return code
def decode(code):
"""function to convert a code to string"""
if code in encode_history:
return encode_history[code]
else:
return None
</code></pre>