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| class Solution {
public int numJewelsInStones(String jewels, String stones) {
boolean[] isJewels = new boolean[128];
for (int i = 0; i < jewels.length(); i++) {
isJewels[jewels.charAt(i) - 'A'] = true;
}
int numJewels = 0;
for (int i = 0; i < stones.length(); i++) {
if (isJewels[stones.charAt(i) - 'A']) {
numJewels++;
}
}
return numJewels;
}
}
|