擅长:python、mysql、java
<p>你需要把孩子的父母和其他孩子进行比较,看他们是否存在</p>
<pre><code>family = [["Mary", "Dan"], ["Dan", "Steven"], ["Steven", "Craig"],["Janice", "Keith"]]
def oldestAncestor(child):
directParent = ""
for pair in family:
if pair[0] == child:
directParent = pair[1]
pass
if directParent == pair[0]:
directParent = pair[1]
pass
pass
return directParent
print (oldestAncestor("Mary"))
</code></pre>
<p>回答</p>
<pre><code>Craig
</code></pre>