<NME> PrintUtil.java
<BEF> ADDFILE
<MSG> add AppLSBoost

<DFF> @@ -0,0 +1,23 @@
+package edu.neu.ccs.pyramid.util;
+
+/**
+ * Created by chengli on 9/22/16.
+ */
+public class PrintUtil {
+    public static String toMutipleLines(Object[] arr){
+        StringBuilder sb = new StringBuilder();
+        for (Object obj: arr){
+            sb.append(obj).append("\n");
+        }
+        return sb.toString();
+    }
+
+    public static String toMutipleLines(double[] arr){
+        StringBuilder sb = new StringBuilder();
+        for (double obj: arr){
+            sb.append(obj).append("\n");
+        }
+        return sb.toString();
+    }
+
+}

add AppLSBoost