From 35ab3a7d549587f40a0a35ec0c74e6cc556456d1 Mon Sep 17 00:00:00 2001
From: zsk612 <zhangsk612@gmail.com>
Date: Fri, 18 Sep 2020 17:00:27 +0800
Subject: [PATCH 1/2] Add methods using streams

---
 src/se/edu/inclass/Main.java | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/se/edu/inclass/Main.java b/src/se/edu/inclass/Main.java
index 3781393..cb45985 100644
--- a/src/se/edu/inclass/Main.java
+++ b/src/se/edu/inclass/Main.java
@@ -21,6 +21,11 @@ public static void main(String[] args) {
 
         System.out.println("Total number of deadlines: " + countDeadlines(tasksData));
 
+        printDataUsingStreams(tasksData);
+
+        printDeadlinesUsingStreams(tasksData);
+
+        System.out.println("No of ddl: " + countDdlUsingStreams(tasksData));
     }
 
     private static int countDeadlines(ArrayList<Task> tasksData) {
@@ -33,12 +38,27 @@ private static int countDeadlines(ArrayList<Task> tasksData) {
         return count;
     }
 
+    public static int countDdlUsingStreams(ArrayList<Task> tasksData) {
+        System.out.println("Count using streams: ");
+        int count;
+        count = (int) tasksData.stream()
+                .filter((t) -> t instanceof Deadline)
+                .count();
+        return count;
+    }
+
     public static void printData(ArrayList<Task> tasksData) {
         for (Task t : tasksData) {
             System.out.println(t);
         }
     }
 
+    public static void printDataUsingStreams(ArrayList<Task> tasksData) {
+        System.out.println("Print using streams: ");
+        tasksData.stream()
+                .forEach(System.out::println);
+    }
+
     public static void printDeadlines(ArrayList<Task> tasksData) {
         for (Task t : tasksData) {
             if (t instanceof Deadline) {
@@ -46,4 +66,12 @@ public static void printDeadlines(ArrayList<Task> tasksData) {
             }
         }
     }
+
+    public static void printDeadlinesUsingStreams(ArrayList<Task> tasksData) {
+        System.out.println("Print ddl using streams");
+        tasksData.stream()
+                .filter((t) -> t instanceof Deadline)
+                .forEach(System.out::println);
+    }
+
 }

From 39675c6ebb9ca13c1f6a83281198ee509f89b5c0 Mon Sep 17 00:00:00 2001
From: zsk612 <zhangsk612@gmail.com>
Date: Fri, 18 Sep 2020 17:40:23 +0800
Subject: [PATCH 2/2] Add lambdas examples

---
 src/se/edu/inclass/Main.java | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/se/edu/inclass/Main.java b/src/se/edu/inclass/Main.java
index 3781393..d6bda0f 100644
--- a/src/se/edu/inclass/Main.java
+++ b/src/se/edu/inclass/Main.java
@@ -8,6 +8,8 @@
 import java.util.ArrayList;
 import java.util.stream.Collectors;
 
+import static java.util.stream.Collectors.toList;
+
 public class Main {
 
     private TaskNameComparator taskNameComparator;
@@ -21,6 +23,11 @@ public static void main(String[] args) {
 
         System.out.println("Total number of deadlines: " + countDeadlines(tasksData));
 
+        printDdlUsingStreams(tasksData);
+
+        for(Task t: filterByString(tasksData, "11")) {
+            System.out.println(t);
+        }
     }
 
     private static int countDeadlines(ArrayList<Task> tasksData) {
@@ -46,4 +53,20 @@ public static void printDeadlines(ArrayList<Task> tasksData) {
             }
         }
     }
+
+    public static void printDdlUsingStreams(ArrayList<Task> tasksData) {
+        tasksData.stream()
+                .filter((s) -> s instanceof Deadline)
+                .sorted((a, b) -> a.getDescription().toLowerCase().compareTo(b.getDescription().toLowerCase()))
+                .forEach(System.out::println);
+    }
+
+    public static ArrayList<Task> filterByString(ArrayList<Task> tasksData, String filterString) {
+        ArrayList<Task> filteredTaskList = (ArrayList<Task>) tasksData.stream()
+                .filter((s) -> s.getDescription().contains(filterString))
+                .collect(toList());
+
+        return filteredTaskList;
+    }
+
 }