diff --git a/src/algorithms/math/Median b/src/algorithms/math/Median
index 6eedbb16..2dcf8425 100644
--- a/src/algorithms/math/Median
+++ b/src/algorithms/math/Median
@@ -1,3 +1,8 @@
+//This this function is use to calculate the median of array
+
+@param num
+@return median
+
 alert(selectMedian([75,3,5,52300,5,4,0,123,2,76,768,28]));
 
 function selectMedian(arr) {