From 4a4fd1c6817f629ce38f9831dbc232ce614699df Mon Sep 17 00:00:00 2001
From: Karsten <karstened@gmail.com>
Date: Sun, 5 May 2019 18:25:05 +0200
Subject: [PATCH] Top Flop Articles Analysis Done

---
 .../spm/baudas/analysis/TopFlopArticle.java   | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 src/main/java/de/hsel/spm/baudas/analysis/TopFlopArticle.java

diff --git a/src/main/java/de/hsel/spm/baudas/analysis/TopFlopArticle.java b/src/main/java/de/hsel/spm/baudas/analysis/TopFlopArticle.java
new file mode 100644
index 0000000..b8a24dc
--- /dev/null
+++ b/src/main/java/de/hsel/spm/baudas/analysis/TopFlopArticle.java
@@ -0,0 +1,53 @@
+package de.hsel.spm.baudas.analysis;
+
+import java.io.*;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import weka.core.Instance;
+import weka.core.Instances;
+
+/**
+ * @author Karsten Eden
+ * @version 0.1
+ * @since 0.1
+ */
+
+
+public class TopFlopArticle implements Analysis<Map<String, Integer>> {
+
+    private Instances instances;
+    private Map<String, Integer> results;
+
+    public TopFlopArticle(File file){
+        results = new HashMap<>();
+        instances = load(file);
+    }
+
+    /**
+     * get sum for every article and sort them asending
+     * @return Map of Name of Products and Sum of Values
+     */
+    public Map<String, Integer> getResult() {
+        String name;
+        Double sum = 0.0;
+        for(int i=11; i<=25; i++) {
+            for (Instance instance : instances) {
+                sum += instance.value(i);
+            }
+            name = instances.attribute(i).name();
+            results.put(name, sum.intValue());
+            sum = 0.0;
+        }
+        //Sort Map in ascending order
+        Stream<Map.Entry<String, Integer>> sorted = results.entrySet().stream().sorted(Map.Entry.comparingByValue());
+        results = sorted.collect(Collectors.toMap(e -> e.getKey(), e -> e.getValue(), (e1, e2) -> e2, LinkedHashMap::new));
+        return results;
+    }
+
+}
+
+