|
| 1 | +classSolution { |
| 2 | +public: |
| 3 | + vector<string>wordSubsets(vector<string>& words1, vector<string>& words2) { |
| 4 | +int maxCharFreq[26] = {0}; |
| 5 | +int tempCharFreq[26]; |
| 6 | +for (constauto& word : words2) { |
| 7 | +memset(tempCharFreq,0,sizeof tempCharFreq); |
| 8 | +for (char ch : word) { |
| 9 | + tempCharFreq[ch -'a']++; |
| 10 | + } |
| 11 | +for (int i =0; i <26; ++i) { |
| 12 | + maxCharFreq[i] =max(maxCharFreq[i], tempCharFreq[i]); |
| 13 | + } |
| 14 | + } |
| 15 | + vector<string> universalWords; |
| 16 | +for (constauto& word : words1) { |
| 17 | +memset(tempCharFreq,0,sizeof tempCharFreq); |
| 18 | +for (char ch : word) { |
| 19 | + tempCharFreq[ch -'a']++; |
| 20 | + } |
| 21 | +bool isUniversal =true; |
| 22 | +for (int i =0; i <26; ++i) { |
| 23 | +if (maxCharFreq[i] > tempCharFreq[i]) { |
| 24 | + isUniversal =false; |
| 25 | +break; |
| 26 | + } |
| 27 | + } |
| 28 | +if (isUniversal) { |
| 29 | + universalWords.emplace_back(word); |
| 30 | + } |
| 31 | + } |
| 32 | +return universalWords; |
| 33 | + } |
| 34 | +}; |