擅长:python、mysql、java
<pre><code>sample = [[CGCG,ATAT],[CGCG,CATC],[ATAT,CATC]]
result = []
for s in sample:
first = s[0]
second = s[1]
combinations = []
for i in range(0,len(first)):
comb = [first[i],second[i]]
if comb not in combinations:
combinations.append(comb)
if len(combinations) == 2:
result.append(s)
print result
</code></pre>