Add title

Author: xdongyan

src/main/java/com/fishercoder/solutions/_611.java

@@ -3,6 +3,7 @@
 import java.util.Arrays;
 
 /**
+ * 611. Valid Triangle Number
  * Given an array consists of non-negative integers,
  * your task is to count the number of triplets chosen
  * from the array that can make triangles if we take them as side lengths of a triangle.