solve

Author: sonjh1217

reverse-bits/sonjh1217.swift

@@ -0,0 +1,14 @@
+class Solution {
+    // O(1) time / O(1) space
+    func reverseBits(_ n: Int) -> Int {
+        var number = n
+        var reversed = 0
+        
+        for _ in 0..<32 {
+            reversed <<= 1
+            reversed |= (number & 1)
+            number >>= 1
+        }
+        return reversed
+    }
+}