diff --git a/1-Fundamentals/1-1-BasicProgModel/EX_1_1_14.java b/1-Fundamentals/1-1-BasicProgModel/EX_1_1_14.java
new file mode 100644
index 0000000..babe7a1
--- /dev/null
+++ b/1-Fundamentals/1-1-BasicProgModel/EX_1_1_14.java
@@ -0,0 +1,21 @@
+/**
+ * Created by asus on 2015/11/21.
+ */
+import edu.princeton.cs.algs4.StdOut;
+
+class EX_1_1_14 {
+    public static void main(String[] args){
+        StdOut.println(lga(33));
+    }
+
+    public static int lga(int N) {
+        int M = 1;
+        int i = 0;
+
+        while (M<N){
+            M *=2;
+            i++;
+        }
+        return i-1;
+    }
+}
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