solve reverse bits

Author: sora0319

reverse-bits/sora0319.java

@@ -0,0 +1,14 @@
+public class Solution {
+    // you need treat n as an unsigned value
+    public int reverseBits(int n) {
+        String binary = String.format("%32s", Integer.toBinaryString(n)).replace(' ', '0');
+        System.out.println(binary);
+        
+        StringBuilder sb  = new StringBuilder(binary);
+        sb.reverse();
+        
+        
+        return Integer.parseUnsignedInt(sb.toString(),2);
+    }
+}
+