Create yeongu.cpp

Author: YeonguChoe

number-of-1-bits/yeongu.cpp

@@ -0,0 +1,12 @@
+class Solution {
+public:
+    int hammingWeight(int n) {
+        int cnt = 0;
+        while(n>0){
+            int val = n%2;
+            cnt+=val;
+            n/=2;
+        }
+        return cnt;
+    }
+};