擅长:python、mysql、java
<p>通过使用<code>collections.Counter</code>实例,它可以变得更加优雅</p>
<pre><code>countFromSb = Counter()
# ...
n = -1
for n, line in enumerate(lines[1::4]):
countFromSb.update(line[i:i+k] for i in range(1+len(line)-k))
lines_processed = n + 1
</code></pre>