擅长:python、mysql、java
<p>我就是这样做的</p>
<pre><code>word = "project"
index = 1
di = 2
for line in range(len(word)):
if index == len(word):
di *= -1
space = " " * (len(word) - index//2)
print(space + word[0:index])
index += di
</code></pre>
<p>输出:</p>
<pre><code> p
pro
proje
project
proje
pro
p
</code></pre>