add remove for max product subarray

tg123 · tg123 · commit de1eea3da7b6 · 2014-09-24T23:57:39.000+08:00
diff --git a/maximum-product-subarray/README.md b/maximum-product-subarray/README.md
@@ -0,0 +1,12 @@
+## Yet another [Maximum Subarray](../maximum-subarray)
+
+We cannot just drop negative histories this time, instead,
+They may grow into bigger positive numbers in the future.
+
+To make [Maximum Subarray](../maximum-subarray) works on this problem,
+just add a variable to remember the negative histories. 
+
+
+When a negative number comes, 
+the negative history may trun into a number greater than positive history.
+Swap the positive and negative histories.
