Create Solution.cpp

poyea · web-flow · commit 447c22ac3cc9 · 2019-05-20T04:25:56.000+08:00
diff --git a/solution/0771.Jewels and Stones/Solution.cpp b/solution/0771.Jewels and Stones/Solution.cpp
@@ -0,0 +1,13 @@
+class Solution {
+public:
+    int numJewelsInStones(string J, string S) {
+        std::unordered_map<char,int> count;
+        int number = 0;
+        for(char c: J) count[c]++;
+        for(char c: S){
+            if(count.find(c)!=count.end())
+                number++;
+        }
+        return number;
+    }
+};
