From 3d00e97166c83afba665838cf48309d44693013a Mon Sep 17 00:00:00 2001
From: t170815518 <christang_1023@outlook.com>
Date: Fri, 18 Sep 2020 17:05:47 +0800
Subject: [PATCH 1/2] Change implementation of Stream

---
 src/se/edu/inclass/Main.java | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/src/se/edu/inclass/Main.java b/src/se/edu/inclass/Main.java
index 3781393..c930f03 100644
--- a/src/se/edu/inclass/Main.java
+++ b/src/se/edu/inclass/Main.java
@@ -34,16 +34,19 @@ private static int countDeadlines(ArrayList<Task> tasksData) {
     }
 
     public static void printData(ArrayList<Task> tasksData) {
-        for (Task t : tasksData) {
-            System.out.println(t);
-        }
+        tasksData.stream().forEach(System.out::println);
+    }
+
+
+    public static int countDeadlinesWithStreams(ArrayList<Task> taskData) {
+        taskData.stream()
+                .filter(n -> n instanceof Deadline)
+                .count();
     }
 
     public static void printDeadlines(ArrayList<Task> tasksData) {
-        for (Task t : tasksData) {
-            if (t instanceof Deadline) {
-                System.out.println(t);
-            }
-        }
+        tasksData.stream()
+                .filter((n) -> n instanceof Deadline)
+                .forEach(System.out::println);
     }
 }

From dbfc6f5c4f7d5f98d74360b39ae7a443ea9ea475 Mon Sep 17 00:00:00 2001
From: t170815518 <christang_1023@outlook.com>
Date: Fri, 18 Sep 2020 17:44:01 +0800
Subject: [PATCH 2/2] Add filterString

---
 src/se/edu/inclass/Main.java | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/se/edu/inclass/Main.java b/src/se/edu/inclass/Main.java
index 3781393..d5eece6 100644
--- a/src/se/edu/inclass/Main.java
+++ b/src/se/edu/inclass/Main.java
@@ -20,7 +20,9 @@ public static void main(String[] args) {
         printDeadlines(tasksData);
 
         System.out.println("Total number of deadlines: " + countDeadlines(tasksData));
+        printDeadlinesUsingStreams(tasksData);
 
+        System.out.println(filterByString(tasksData, "11"));
     }
 
     private static int countDeadlines(ArrayList<Task> tasksData) {
@@ -46,4 +48,17 @@ public static void printDeadlines(ArrayList<Task> tasksData) {
             }
         }
     }
+
+    public static void printDeadlinesUsingStreams(ArrayList<Task> taskData) {
+        taskData.stream()
+                .filter(n -> n instanceof Deadline)
+                .sorted( (a,b) -> a.getDescription().toLowerCase().compareTo(b.getDescription().toLowerCase()))
+                .forEach(System.out::println);
+    }
+
+    public static ArrayList<Task> filterByString(ArrayList<Task> taskData, String filterString) {
+        ArrayList<Task> filteredList = (ArrayList<Task>) taskData.stream().filter(n -> n.getDescription().contains(filterString)).
+                collect(Collectors.toList());
+        return filteredList;
+    }
 }