擅长:python、mysql、java
<p>以下是一个无需导入re的解决方案:</p>
<pre><code>input_string = "if you can dream it, you can do it"
# The number of characters wanted
chunksize=4
# Without importing re
# Remove spaces
input_string_without_spaces = "".join(input_string.split())
# Result as a list
result_as_list = [input_string_without_spaces[i:i+chunksize] for i in range(0, len(input_string_without_spaces), chunksize)]
# Result as string
result_as_string = " ".join(result_as_list)
print(result_as_string)
</code></pre>
<p>输出:</p>
<pre><code>ifyo ucan drea mit, youc ando it
</code></pre>