擅长:python、mysql、java
<p>添加一个包含字符串长度的helper数组,然后使用numpy的argsort为您提供将根据这些长度排序的索引。用这些索引索引原始数据:</p>
<pre><code>import numpy as np
arr = np.array(["year","month","eye","i","stream","key","house"]) # np-array needed for later indexing
arr_ = map(lambda x: len(x), arr) # remark: py3 would work different here
x = arr[np.argsort(arr_)]
print(x)
</code></pre>