From f2f966df7ef6bd740eb65b61b0f029607ab86459 Mon Sep 17 00:00:00 2001
From: TMajlu <thomasmajnie@gmail.com>
Date: Tue, 13 Aug 2024 12:54:27 +0200
Subject: [PATCH] Did the Core exercises.

---
 .../java/com/booleanuk/core/Exercise.java     | 31 +++++++++++++++++--
 1 file changed, 28 insertions(+), 3 deletions(-)

diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index d31a45c..2a2338c 100644
--- a/src/main/java/com/booleanuk/core/Exercise.java
+++ b/src/main/java/com/booleanuk/core/Exercise.java
@@ -44,6 +44,10 @@ public ArrayList<Integer> getFavouriteNumbers() {
            second number contained in the list that is returned from getFavouriteNumbers
      */
 
+    public int  getSecondNumber(){
+        return getFavouriteNumbers().get(1);
+    }
+
 
 
     /*
@@ -56,14 +60,22 @@ public ArrayList<Integer> getFavouriteNumbers() {
          https://www.programiz.com/java-programming/library/arraylist/replaceall
      */
 
+    public ArrayList<Integer> multiply(ArrayList<Integer> numlist, int num) {
 
+        for (int i=0; i<numlist.size();++i){
+            numlist.set(i,num*numlist.get(i) );
+        }
+        return numlist;
+    }
 
     /*
         TODO: 3. Create a method named isEmpty that accepts one parameter:
          - A list of strings
          The method must return a boolean that indicates whether the provided list is empty or not
      */
-
+    public boolean isEmpty(ArrayList<String> strings){
+        return strings.isEmpty();
+    }
 
 
     /*
@@ -73,7 +85,10 @@ public ArrayList<Integer> getFavouriteNumbers() {
          The method must add the second parameter into the list provided and then return the list
      */
 
-
+    public ArrayList<String> addIngredient(ArrayList<String> strings, String newString){
+        strings.add(newString);
+        return strings;
+    }
 
     /*
         TODO: 5. Create a method named removeIngredient that accepts two parameters in this order:
@@ -82,7 +97,14 @@ public ArrayList<Integer> getFavouriteNumbers() {
          The method must remove the second parameter from the list and then return the list
      */
 
-
+    public ArrayList<String> removeIngredient(ArrayList<String> strings, String newString){
+        for (int i=0; i<strings.size(); ++i){
+            if (strings.get(i)==newString){
+                strings.remove(i);
+            }
+        }
+        return strings;
+    }
 
     /*
         TODO: 6. Create a method named containsIngredient that accepts two parameters in this order:
@@ -91,6 +113,9 @@ public ArrayList<Integer> getFavouriteNumbers() {
          The method must return a boolean that indicates whether the second parameter exists in the provided list
      */
 
+    public boolean containsIngredient(ArrayList<String> strings, String newString){
 
+        return strings.contains(newString);
+    }
 
 }