771. Jewels and Stones

阿新 • • 發佈：2019-03-07

nta stones con bsp for span return urn har

class Solution {
public:
    int numJewelsInStones(string J, string S) {
        vector<int> container(256,0); 
        for(char s : S)
            container[s - ‘0‘]++;
        int count = 0;
        for(char j : J)
            count += container[j - ‘0‘];
        return count;
    }
};

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