sub bit number problem done

Author: Ram swaroop

src/me/ramswaroop/bits/SubBit.java

@@ -0,0 +1,30 @@
+package me.ramswaroop.bits;
+
+/**
+ * Created by IntelliJ IDEA.
+ *
+ * @author: ramswaroop
+ * @date: 6/4/15
+ * @time: 10:54 PM
+ */
+public class SubBit {
+
+    /**
+     * Returns the number formed with the bits from {@param start}
+     * and {@param end} of {@param num} (both inclusive).
+     *
+     * @param num
+     * @param start
+     * @param end
+     * @return
+     */
+    public static int getSubBit(int num, int start, int end) {
+        num <<= (32 - end);
+        num >>>= (start - end + 31);
+        return num;
+    }
+
+    public static void main(String a[]) {
+        System.out.println(getSubBit(15, 1, 2));
+    }
+}