Leetcode 2273. Find Resultant Array After Removing Anagrams

class Solution {
public:
    void get_ana(vector& ana,string word){
        for(auto& c : word){
            ana[c-'a']++;
        }
    }
    vector removeAnagrams(vector& words) {
        vector curr(26,0);
        get_ana(curr,words[0]);
        vector ans;
        ans.push_back(words[0]);
        for(int i=1;i
            vector next(26,0);
            get_ana(next,words[i]);
            if(curr != next){
                ans.push_back(words[i]);
                curr = next;
            }
        }
        return ans;
    }
};

时间复杂度：O(n*m)，n为单词个数，m为单词平均长度
空间复杂度：O(26)