number-of-1-bits solution

Author: ohgyulim

number-of-1-bits/ohgyulim.java

@@ -0,0 +1,10 @@
+class Solution {
+    /* 시간 복잡도: O(1)
+    * 
+    * 공간 복잡도: O(1)
+    */ 
+    public int hammingWeight(int n) {
+        return Integer.bitCount(n);
+    }
+}
+