number of 1 bits solved

Author: sora0319

number-of-1-bits/sora0319.java

@@ -0,0 +1,12 @@
+class Solution {
+    public int hammingWeight(int n) {
+        int cnt = 0;
+        String binary = Integer.toBinaryString(n);
+
+        for(int i = 0; i < binary.length(); i++){
+            if(binary.charAt(i) == '1') cnt++;
+        }
+        return cnt;
+    }
+}
+