Merge pull request #1491 from jinhyungrhee/week8

[jinhyunghree] Week 8 solutions

Author: jinhyungrhee

reverse-bits/jinhyungrhee.java

@@ -0,0 +1,15 @@
+public class Solution {
+    // you need treat n as an unsigned value
+    public int reverseBits(int n) {
+        String intStr = String.valueOf(n);
+        String binStr = String.format("%32s", Integer.toBinaryString(n)).replace(" ", "0");
+
+        String reversedBinStr = "";
+        for (int i = 31; i >= 0; i--) {
+            reversedBinStr += binStr.charAt(i);
+        }
+
+        Integer reversedInt = Integer.parseUnsignedInt(reversedBinStr, 2);
+        return reversedInt;
+    }
+}