擅长:python、mysql、java
<p>最快的方法是在此处使用<code>str.translate</code>:</p>
<pre><code>>>> lettersGuessed = ['a', 'b', 'c']
>>> 'wedqwdasdasccdshjasdcas'.translate(None, ''.join(lettersGuessed))
'wedqwdsdsdshjsds'
</code></pre>
<p>如果<code>lettersGuessed</code>已经是字符串,则删除<code>''.join</code>调用。在</p>
<p>与<code>str.join</code>和<code>filter</code>相比的计时结果,取自@thefourtheye的溶液:</p>
^{pr2}$
<p><strong>输出:</strong></p>
<pre><code>filter > 6.49355100548
.join > 4.02496357229
trans > 0.69938109531
</code></pre>