From f26ebda4f17c7841ebf7d2b62c3fa4ddcec67b8a Mon Sep 17 00:00:00 2001
From: gidra5 <hranitel.52@gmail.com>
Date: Sun, 24 Nov 2019 21:03:03 +0200
Subject: [PATCH] Tasks done

---
 Exercises/1-remove.js     |  5 ++---
 Exercises/2-elements.js   |  3 ++-
 Exercises/3-unique.js     | 10 +++++++++-
 Exercises/4-difference.js | 10 +++++++++-
 4 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/Exercises/1-remove.js b/Exercises/1-remove.js
index 82fba07..5a239f5 100644
--- a/Exercises/1-remove.js
+++ b/Exercises/1-remove.js
@@ -1,7 +1,6 @@
 'use strict';
 
-const removeElement = (array, item) => {
-  // Remove item from array modifying original array
-};
+const removeElement = (array, item) =>
+  (array.includes(item) ? array.splice(array.indexOf(item), 1) : array);
 
 module.exports = { removeElement };
diff --git a/Exercises/2-elements.js b/Exercises/2-elements.js
index 8518c71..1ce681c 100644
--- a/Exercises/2-elements.js
+++ b/Exercises/2-elements.js
@@ -1,7 +1,8 @@
 'use strict';
 
 const removeElements = (array, ...items) => {
-  // Remove multiple items from array modifying original array
+  for (const item of items)
+    array.includes(item) ? array.splice(array.indexOf(item), 1) : array;
 };
 
 module.exports = { removeElements };
diff --git a/Exercises/3-unique.js b/Exercises/3-unique.js
index b738823..e113dea 100644
--- a/Exercises/3-unique.js
+++ b/Exercises/3-unique.js
@@ -3,6 +3,14 @@
 // Create and return a new array without duplicate elements
 // Don't modify initial array
 
-const unique = array => [];
+const unique = array => {
+  const na = [];
+
+  array.forEach(i => {
+    if (!na.includes(i)) na.push(i);
+  });
+
+  return na;
+};
 
 module.exports = { unique };
diff --git a/Exercises/4-difference.js b/Exercises/4-difference.js
index 37d24ab..bf7c9b7 100644
--- a/Exercises/4-difference.js
+++ b/Exercises/4-difference.js
@@ -3,6 +3,14 @@
 // Find difference of two arrays
 // elements from array1 that are not includes in array2
 
-const difference = (array1, array2) => [];
+const difference = (array1, array2) => {
+  const na = [];
+
+  array1.forEach(i => {
+    if (!array2.includes(i)) na.push(i);
+  });
+
+  return na;
+};
 
 module.exports = { difference };