anagram2

from typing import List, Any

class Solution:
    def anagrams(self,strs):
        strs_comp = strs.copy()
        if len(strs_comp) == 0:
            return []  # trivial case
        else:
            answer = [] # we keep an answer array to store all sorted anagrams
            k = 0
            strs_comp = sorted(strs_comp).copy()
            original: List[Any] = strs_comp.copy()  # save for later output
            for i in range(len(original)):
                if strs_comp[i] != '':
                    strs_comp[i] = ''.join(sorted(strs_comp[i]))
                    #we sort everything, hold the length 0 exception
            while k < len(strs_comp):
                #start to iterate
                if strs_comp[k] not in answer:
                    if strs_comp[k] in strs_comp[k+1:]:
                         answer.append(strs_comp[k])
                         k+=1
                         #match but not in answer, update answer and next
                    else:
                        #not match not in answer
                        strs_comp.pop(k)
                        original.pop(k)
                else:
                    k+=1
                    #got something in answer, next
            return original