字母异位词

给你一个字符串数组，请你将 字母异位词 组合在一起。可以按任意顺序返回结果列表。

字母异位词 是由重新排列源单词的字母得到的一个新单词，所有源单词中的字母通常恰好只用一次

示例 1:

输入: strs = ["eat", "tea", "tan", "ate", "nat", "bat"]
输出: [["bat"],["nat","tan"],["ate","eat","tea"]]

代码

strs = ["eat", "tea", "tan", "ate", "nat", "bat"]
def recurtion(results,temp,nums):
    if len(nums)==2:
        results.add(''.join(temp+[nums[0]]+[nums[1]]))
        results.add(''.join(temp+[nums[1]]+[nums[0]]))
    if len(nums)>2:
        for it in range(len(nums)):
            recurtion(results,temp+[nums[it]],nums[0:it]+nums[it+1:])
def test(nums):   #实现nums的全排例
    results=set()
    for it in range(len(nums)):
        temp=[]
        temp.append(nums[it])
        recurtion(results,temp,nums[0:it]+nums[(it)+1:])
    return results


results=list()
for it in strs:
    if set(test(it))&set(strs) not  in results:
        results.append(set(test(it))&set(strs))

for it in range(len(results)):
    results[it] = list(results[it])
print(results)

输出：[['tea', 'ate', 'eat'], ['tan', 'nat'], ['bat']]