1002. 查找共用字符

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题目链接：1002. 查找共用字符

代码如下：

class Solution 
{
public:vector<string> commonChars(vector<string>& words) {vector<string> res;if(words.size()==0) return res;int hash[26]={0};for(int i=0;i<words[0].size();i++){   hash[words[0][i]-'a']++;}int hashOther[26]={0};for(int i=1;i<words.size();i++){memset(hashOther,0,sizeof(hashOther));for(int j=0;j<words[i].size();j++){hashOther[words[i][j]-'a']++;}for(int k=0;k<26;k++){hash[k]=min(hash[k],hashOther[k]);}}for(int i=0;i<26;i++){while(hash[i]!=0){res.push_back(string(1,i+'a'));hash[i]--;}}return res;}
};