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| class Solution { | |
| public int numJewelsInStones(String J, String S) { | |
| if (S == null || S.length() < 1 || J == null || J.length() < 1) { | |
| return 0; | |
| } | |
| int[] L = new int[500]; | |
| for(int i = 0; i < J.length(); i++) { | |
| L[J.charAt(i)] = 1; | |
| } | |
| int count = 0; | |
| for(int i = 0; i < S.length(); i++) { | |
| if(L[S.charAt(i)] == 1) { | |
| count++; | |
| } | |
| } | |
| return count; | |
| } | |
| } |
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