擅长:python、mysql、java
<p>我想提出一个非正则表达式的解决方案:</p>
<pre><code>string = 'LAST LAST2 First First2'
words = string.split(' ') # equals ['LAST', 'LAST2', 'First', 'First2']
result = []
for word in words:
if not word.isupper():
result.append(word)
print(' '.join(result))
</code></pre>
<p>结果:</p>
<pre><code>First First2
</code></pre>