From b69c07b010a49bc2b8ffbf668e4eb4c7cef7916f Mon Sep 17 00:00:00 2001
From: fazzy12 <kaluifeanyi00@gmail.com>
Date: Mon, 25 Jul 2022 14:16:30 +0100
Subject: [PATCH 1/6] boolean operators

---
 02_Day_Data_types/string_data_types.js        |  10 ++
 .../03_day_starter/scripts/main.js            | 126 +++++++++++++++++-
 2 files changed, 135 insertions(+), 1 deletion(-)

diff --git a/02_Day_Data_types/string_data_types.js b/02_Day_Data_types/string_data_types.js
index fd61150..4bc4d0f 100644
--- a/02_Day_Data_types/string_data_types.js
+++ b/02_Day_Data_types/string_data_types.js
@@ -5,3 +5,13 @@ let country = 'Finland'
 let city = 'Helsinki'
 let language = 'JavaScript'
 let job = 'teacher'
+
+
+
+
+let sentence = "%I $am@% a %tea@cher%, &and& I lo%#ve %te@a@ching%;. The@re $is no@th@ing; &as& mo@re rewarding as educa@ting &and& @emp%o@weri@ng peo@ple. ;I found tea@ching m%o@re interesting tha@n any ot#her %jo@bs. %Do@es thi%s mo@tiv#ate yo@u to be a tea@cher!? %Th#is 30#Days&OfJavaScript &is al@so $the $resu@lt of &love& of tea&ching"
+
+let reg = /[%@#&$;]/g;
+let cleaned = sentence.replace(reg, '');
+console.log(cleaned);
+console.log(cleaned.match('teacher'));
\ No newline at end of file
diff --git a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
index 7762908..3801e32 100644
--- a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
+++ b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
@@ -1 +1,125 @@
-// this is your main.js script
\ No newline at end of file
+// this is your main.js script
+// level 1:
+
+// number i
+const firstName = 'John';
+const lastName = 'Doe';
+const country = 'United States';
+const city = 'california';
+const age = 20;
+const isMarried = false;
+const year = 2009;
+
+console.log(typeof(firstName));
+console.log(typeof(lastName));
+console.log(typeof(country));
+console.log(typeof(city));
+console.log(typeof(age));
+console.log(typeof(isMarried));
+console.log(typeof(year));
+
+// number2
+
+console.log(typeof('10') ==  10);
+
+// number3
+
+console.log(parseInt('9.8') == 10);
+
+// number4
+
+// true
+const a = 5 > 2;
+const b = 10 > 5;
+const c = 154843 > 2;
+// false
+const d = 6 < 5;
+const e = 7 < 5;
+const f = 8 < 5;
+
+console.log(a, b, c, d, e, f);
+
+// number5
+console.log(4 > 3); // true
+console.log(4 >= 3); //true
+console.log(4 < 3); // false
+console.log(4 <= 3); // false
+console.log(4 == 4); //true
+console.log(4 === 4); //true
+console.log(4 != 4); //false
+console.log(4 !== 4); //false
+console.log(4 != '4'); //false
+console.log(4 == '4'); //true
+console.log(4 === '4'); //false
+
+console.log('python'.length == 'jargon'.length); //true
+
+// number 6
+console.log(4 > 3 && 10 < 12); // true
+console.log(4 > 3 && 10 > 12); // false
+console.log(4 > 3 || 10 < 12); // true
+console.log(4 > 3 || 10 > 12); // true
+console.log(!(4 > 3)); // false
+console.log(!(4 < 3)); // true
+console.log(!(false)); // true
+console.log(!(4 > 3 && 10 < 12)); // false
+console.log(!(4 > 3 && 10 > 12)); // true
+console.log(!(4 === '4')); // true
+
+console.log('dragon.'.includes('on') && 'python'.includes('on'));
+
+// dates
+
+let date = new Date();
+console.log(date.getFullYear());
+console.log(date.getMonth());
+console.log(date.getDate());
+console.log(date.getDay());
+console.log(date.getHours());
+console.log(date.getMinutes());
+console.log(date.getMinutes());
+
+
+// level 2
+
+// number 1
+// let base = window.prompt('Enter base:');
+// let height = window.prompt('Enter height:');
+// let result = (base * height) / 2;
+// window.alert(`The area of the triangle is ${result}`);
+
+// number 2
+
+// let side_a = window.prompt('Enter side a:');
+// let side_b = window.prompt('Enter side b:');
+// let side_c = window.prompt('Enter side c:');
+ 
+// let parameter = side_a  + side_b  + side_c;
+// window.alert(`The perimeter of the triangle is ${parameter}`);
+
+// number 3
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

From 0d458721663458c1941aee32fc9df01db499f245 Mon Sep 17 00:00:00 2001
From: fazzy12 <kaluifeanyi00@gmail.com>
Date: Mon, 25 Jul 2022 14:21:16 +0100
Subject: [PATCH 2/6] boolean operators

---
 .../03_day_starter/scripts/main.js            | 26 +++++++++----------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
index 3801e32..43bbf3c 100644
--- a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
+++ b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
@@ -80,24 +80,24 @@ console.log(date.getMinutes());
 console.log(date.getMinutes());
 
 
-// level 2
+level 2
 
-// number 1
-// let base = window.prompt('Enter base:');
-// let height = window.prompt('Enter height:');
-// let result = (base * height) / 2;
-// window.alert(`The area of the triangle is ${result}`);
+number 1
+let base = window.prompt('Enter base:');
+let height = window.prompt('Enter height:');
+let result = (base * height) / 2;
+window.alert(`The area of the triangle is ${result}`);
 
-// number 2
+number 2
 
-// let side_a = window.prompt('Enter side a:');
-// let side_b = window.prompt('Enter side b:');
-// let side_c = window.prompt('Enter side c:');
+let side_a = window.prompt('Enter side a:');
+let side_b = window.prompt('Enter side b:');
+let side_c = window.prompt('Enter side c:');
  
-// let parameter = side_a  + side_b  + side_c;
-// window.alert(`The perimeter of the triangle is ${parameter}`);
+let parameter = side_a  + side_b  + side_c;
+window.alert(`The perimeter of the triangle is ${parameter}`);
 
-// number 3
+number 3
 
 
 

From 047f3d48778b23848f940d1bf612daf5b75f0d25 Mon Sep 17 00:00:00 2001
From: fazzy12 <kaluifeanyi00@gmail.com>
Date: Mon, 25 Jul 2022 14:22:18 +0100
Subject: [PATCH 3/6] boolean operators

---
 .../03_day_starter/scripts/main.js                        | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
index 43bbf3c..65e8f79 100644
--- a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
+++ b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
@@ -80,15 +80,15 @@ console.log(date.getMinutes());
 console.log(date.getMinutes());
 
 
-level 2
+// level 2
 
-number 1
+// number 1
 let base = window.prompt('Enter base:');
 let height = window.prompt('Enter height:');
 let result = (base * height) / 2;
 window.alert(`The area of the triangle is ${result}`);
 
-number 2
+// number 2
 
 let side_a = window.prompt('Enter side a:');
 let side_b = window.prompt('Enter side b:');
@@ -97,7 +97,7 @@ let side_c = window.prompt('Enter side c:');
 let parameter = side_a  + side_b  + side_c;
 window.alert(`The perimeter of the triangle is ${parameter}`);
 
-number 3
+// number 3
 
 
 

From 45520c65c6d4a1783ac9064c0dbdb15a975354dc Mon Sep 17 00:00:00 2001
From: fazzy12 <kaluifeanyi00@gmail.com>
Date: Mon, 25 Jul 2022 15:29:22 +0100
Subject: [PATCH 4/6] updated

---
 .../03_day_starter/scripts/main.js            | 30 +++++++++++++------
 1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
index 65e8f79..0b3f030 100644
--- a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
+++ b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
@@ -83,21 +83,33 @@ console.log(date.getMinutes());
 // level 2
 
 // number 1
-let base = window.prompt('Enter base:');
-let height = window.prompt('Enter height:');
-let result = (base * height) / 2;
-window.alert(`The area of the triangle is ${result}`);
+// let base = window.prompt('Enter base:');
+// let height = window.prompt('Enter height:');
+// let result = (base * height) / 2;
+// window.alert(`The area of the triangle is ${result}`);
 
 // number 2
 
-let side_a = window.prompt('Enter side a:');
-let side_b = window.prompt('Enter side b:');
-let side_c = window.prompt('Enter side c:');
+// let side_a = window.prompt('Enter side a:');
+// let side_b = window.prompt('Enter side b:');
+// let side_c = window.prompt('Enter side c:');
  
-let parameter = side_a  + side_b  + side_c;
-window.alert(`The perimeter of the triangle is ${parameter}`);
+// let parameter = side_a  + side_b  + side_c;
+// window.alert(`The perimeter of the triangle is ${parameter}`);
 
 // number 3
+// let length = window.prompt('Enter length:');
+// let width = window.prompt('Enter width:');
+// let area = (length + width);
+// let perimeter = 2 * (length + width);
+// window.alert(`the area of the rectangle is ${area} and the perimeter of the rectangle is ${perimeter}` );
+
+// number 4 =
+let PI = 3.14;
+let radius = window.prompt('enter radius:');
+let area = PI * (radius * radius);
+let circumfrence = 2 * (PI * radius);
+window.alert(`The area of the circle is ${area} and the circumfrence of a circle is ${circumfrence}`);
 
 
 

From e0056784bee45cca37570f86e3200a4b1f819eed Mon Sep 17 00:00:00 2001
From: fazzy12 <kaluifeanyi00@gmail.com>
Date: Mon, 25 Jul 2022 15:31:49 +0100
Subject: [PATCH 5/6] updated

---
 .../03_day_starter/scripts/main.js            | 28 +++++++++----------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
index 0b3f030..a0a16b7 100644
--- a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
+++ b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
@@ -83,26 +83,26 @@ console.log(date.getMinutes());
 // level 2
 
 // number 1
-// let base = window.prompt('Enter base:');
-// let height = window.prompt('Enter height:');
-// let result = (base * height) / 2;
-// window.alert(`The area of the triangle is ${result}`);
+let base = window.prompt('Enter base:');
+let height = window.prompt('Enter height:');
+let result = (base * height) / 2;
+window.alert(`The area of the triangle is ${result}`);
 
 // number 2
 
-// let side_a = window.prompt('Enter side a:');
-// let side_b = window.prompt('Enter side b:');
-// let side_c = window.prompt('Enter side c:');
+let side_a = window.prompt('Enter side a:');
+let side_b = window.prompt('Enter side b:');
+let side_c = window.prompt('Enter side c:');
  
-// let parameter = side_a  + side_b  + side_c;
-// window.alert(`The perimeter of the triangle is ${parameter}`);
+let parameter = side_a  + side_b  + side_c;
+window.alert(`The perimeter of the triangle is ${parameter}`);
 
 // number 3
-// let length = window.prompt('Enter length:');
-// let width = window.prompt('Enter width:');
-// let area = (length + width);
-// let perimeter = 2 * (length + width);
-// window.alert(`the area of the rectangle is ${area} and the perimeter of the rectangle is ${perimeter}` );
+let length = window.prompt('Enter length:');
+let width = window.prompt('Enter width:');
+let area = (length + width);
+let perimeter = 2 * (length + width);
+window.alert(`the area of the rectangle is ${area} and the perimeter of the rectangle is ${perimeter}` );
 
 // number 4 =
 let PI = 3.14;

From b23f8a6334dbfa935759eedf6c301cb03960b82a Mon Sep 17 00:00:00 2001
From: fazzy12 <kaluifeanyi00@gmail.com>
Date: Tue, 26 Jul 2022 22:52:30 +0100
Subject: [PATCH 6/6] day four update

---
 .../03_day_starter/scripts/main.js            | 208 +++++++++++-------
 .../04_day_starter/scripts/main.js            |  26 ++-
 05_Day_Arrays/05_day_starter/scripts/main.js  |  75 ++++++-
 3 files changed, 230 insertions(+), 79 deletions(-)

diff --git a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
index a0a16b7..0393d1d 100644
--- a/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
+++ b/03_Day_Booleans_operators_date/03_day_starter/scripts/main.js
@@ -2,114 +2,170 @@
 // level 1:
 
 // number i
-const firstName = 'John';
-const lastName = 'Doe';
-const country = 'United States';
-const city = 'california';
-const age = 20;
-const isMarried = false;
-const year = 2009;
-
-console.log(typeof(firstName));
-console.log(typeof(lastName));
-console.log(typeof(country));
-console.log(typeof(city));
-console.log(typeof(age));
-console.log(typeof(isMarried));
-console.log(typeof(year));
+// const firstName = 'John';
+// const lastName = 'Doe';
+// const country = 'United States';
+// const city = 'california';
+// const age = 20;
+// const isMarried = false;
+// const year = 2009;
+
+// console.log(typeof(firstName));
+// console.log(typeof(lastName));
+// console.log(typeof(country));
+// console.log(typeof(city));
+// console.log(typeof(age));
+// console.log(typeof(isMarried));
+// console.log(typeof(year));
 
 // number2
 
-console.log(typeof('10') ==  10);
+// console.log(typeof('10') ==  10);
 
 // number3
 
-console.log(parseInt('9.8') == 10);
+// console.log(parseInt('9.8') == 10);
 
 // number4
 
 // true
-const a = 5 > 2;
-const b = 10 > 5;
-const c = 154843 > 2;
+// const a = 5 > 2;
+// const b = 10 > 5;
+// const c = 154843 > 2;
 // false
-const d = 6 < 5;
-const e = 7 < 5;
-const f = 8 < 5;
+// const d = 6 < 5;
+// const e = 7 < 5;
+// const f = 8 < 5;
 
-console.log(a, b, c, d, e, f);
+// console.log(a, b, c, d, e, f);
 
 // number5
-console.log(4 > 3); // true
-console.log(4 >= 3); //true
-console.log(4 < 3); // false
-console.log(4 <= 3); // false
-console.log(4 == 4); //true
-console.log(4 === 4); //true
-console.log(4 != 4); //false
-console.log(4 !== 4); //false
-console.log(4 != '4'); //false
-console.log(4 == '4'); //true
-console.log(4 === '4'); //false
-
-console.log('python'.length == 'jargon'.length); //true
+// console.log(4 > 3); // true
+// console.log(4 >= 3); //true
+// console.log(4 < 3); // false
+// console.log(4 <= 3); // false
+// console.log(4 == 4); //true
+// console.log(4 === 4); //true
+// console.log(4 != 4); //false
+// console.log(4 !== 4); //false
+// console.log(4 != '4'); //false
+// console.log(4 == '4'); //true
+// console.log(4 === '4'); //false
+
+// console.log('python'.length == 'jargon'.length); //true
 
 // number 6
-console.log(4 > 3 && 10 < 12); // true
-console.log(4 > 3 && 10 > 12); // false
-console.log(4 > 3 || 10 < 12); // true
-console.log(4 > 3 || 10 > 12); // true
-console.log(!(4 > 3)); // false
-console.log(!(4 < 3)); // true
-console.log(!(false)); // true
-console.log(!(4 > 3 && 10 < 12)); // false
-console.log(!(4 > 3 && 10 > 12)); // true
-console.log(!(4 === '4')); // true
-
-console.log('dragon.'.includes('on') && 'python'.includes('on'));
+// console.log(4 > 3 && 10 < 12); // true
+// console.log(4 > 3 && 10 > 12); // false
+// console.log(4 > 3 || 10 < 12); // true
+// console.log(4 > 3 || 10 > 12); // true
+// console.log(!(4 > 3)); // false
+// console.log(!(4 < 3)); // true
+// console.log(!(false)); // true
+// console.log(!(4 > 3 && 10 < 12)); // false
+// console.log(!(4 > 3 && 10 > 12)); // true
+// console.log(!(4 === '4')); // true
+
+// console.log('dragon.'.includes('on') && 'python'.includes('on'));
 
 // dates
 
-let date = new Date();
-console.log(date.getFullYear());
-console.log(date.getMonth());
-console.log(date.getDate());
-console.log(date.getDay());
-console.log(date.getHours());
-console.log(date.getMinutes());
-console.log(date.getMinutes());
+// let date = new Date();
+// console.log(date.getFullYear());
+// console.log(date.getMonth());
+// console.log(date.getDate());
+// console.log(date.getDay());
+// console.log(date.getHours());
+// console.log(date.getMinutes());
+// console.log(date.getMinutes());
 
 
 // level 2
 
 // number 1
-let base = window.prompt('Enter base:');
-let height = window.prompt('Enter height:');
-let result = (base * height) / 2;
-window.alert(`The area of the triangle is ${result}`);
+// let base = window.prompt('Enter base:');
+// let height = window.prompt('Enter height:');
+// let result = (base * height) / 2;
+// window.alert(`The area of the triangle is ${result}`);
 
 // number 2
 
-let side_a = window.prompt('Enter side a:');
-let side_b = window.prompt('Enter side b:');
-let side_c = window.prompt('Enter side c:');
+// let side_a = window.prompt('Enter side a:');
+// let side_b = window.prompt('Enter side b:');
+// let side_c = window.prompt('Enter side c:');
  
-let parameter = side_a  + side_b  + side_c;
-window.alert(`The perimeter of the triangle is ${parameter}`);
+// let parameter = side_a  + side_b  + side_c;
+// window.alert(`The perimeter of the triangle is ${parameter}`);
 
 // number 3
-let length = window.prompt('Enter length:');
-let width = window.prompt('Enter width:');
-let area = (length + width);
-let perimeter = 2 * (length + width);
-window.alert(`the area of the rectangle is ${area} and the perimeter of the rectangle is ${perimeter}` );
+// let length = window.prompt('Enter length:');
+// let width = window.prompt('Enter width:');
+// let area = (length + width);
+// let perimeter = 2 * (length + width);
+// window.alert(`the area of the rectangle is ${area} and the perimeter of the rectangle is ${perimeter}` );
 
 // number 4 =
-let PI = 3.14;
-let radius = window.prompt('enter radius:');
-let area = PI * (radius * radius);
-let circumfrence = 2 * (PI * radius);
-window.alert(`The area of the circle is ${area} and the circumfrence of a circle is ${circumfrence}`);
+// let PI = 3.14;
+// let radius = window.prompt('enter radius:');
+// let area = PI * (radius * radius);
+// let circumfrence = 2 * (PI * radius);
+// window.alert(`The area of the circle is ${area} and the circumfrence of a circle is ${circumfrence}`);
+
+// number 5
+
+// number 6
+
+// number 7
+
+// number 8
+
+// number 9
+// let hours = window.prompt('Enter number of hours:');
+// let rates = window.prompt('Enter rates:');
+// let pay = hours * rates;
+
+// window.alert(`your weekly payment is ${pay}`);
+
+// number 10
+// let Name = window.prompt('Enter name:');
+// window.alert(Name.length > 7 ? 'your name is long' : 'your name is short');
+
+// number 11
+// let firstName = 'Asabeneh'
+// let lastName = 'Yetayeh'
+
+// console.log(' your first name' + firstName + 'is longer than your last name' + lastName);
+
+// number 12
+// let myAge = 250
+// let yourAge = 25
+
+// let older = myAge - yourAge;
+
+// console.log(`I am ${older} years older than you.`);
+
+// number 13
+// let myAge = window.prompt('Enter your age here:');
+// let remAge = 25 - myAge;
+// window.alert(myAge >= 25 ? 'you are old enough to drive' : `You will be allowed to drive after ${remAge} years.`);
+
+// number 14
+
+// number 15
+let date = new Date();
+
+
+
+
+
+
+
+
+
+
+
+
+
 
 
 
diff --git a/04_Day_Conditionals/04_day_starter/scripts/main.js b/04_Day_Conditionals/04_day_starter/scripts/main.js
index ad0c1eb..39d571e 100644
--- a/04_Day_Conditionals/04_day_starter/scripts/main.js
+++ b/04_Day_Conditionals/04_day_starter/scripts/main.js
@@ -1,3 +1,27 @@
 // this is your main.js script
 
-alert('Open the browser console whenever you work on JavaScript')
\ No newline at end of file
+// level 1
+
+// Number 1
+
+// const age = prompt('Enter your age:')
+// const wait = 2022 - age
+
+// if (age >= 18){
+//     alert('You are old enough to drive')
+// } else {
+//     alert('You are left with' +  age  + ' years to drive')
+// }
+
+// number 2
+// let myAge = prompt('Enter my age:')
+// let yourAge = prompt('Enter your age:')
+// let older = yourAge - myAge
+
+// if (myAge > yourAge){
+//     alert('i am older than you')
+// } else {
+//     alert('you are' + older + ' years younger than me')
+// }
+
+
diff --git a/05_Day_Arrays/05_day_starter/scripts/main.js b/05_Day_Arrays/05_day_starter/scripts/main.js
index 50cc07e..2d73227 100644
--- a/05_Day_Arrays/05_day_starter/scripts/main.js
+++ b/05_Day_Arrays/05_day_starter/scripts/main.js
@@ -1,3 +1,74 @@
 console.log(countries)
-alert('Open the browser console whenever you work on JavaScript')
-alert('Open the console and check if the countries has been loaded')
\ No newline at end of file
+// alert('Open the browser console whenever you work on JavaScript')
+// alert('Open the console and check if the countries has been loaded')
+
+// number 1
+const emptyArray0 = []
+
+// number 2
+const arryFiveElements = [1, 2, 3, 4, 5]
+
+// number 3
+console.log(arryFiveElements.length) // 5
+
+// number 4
+console.log(arryFiveElements[0])
+console.log(arryFiveElements[2])
+console.log(arryFiveElements.length - 1)
+
+// number 5
+const mixedDataType = [1, 23, 34, 'fruit', 'rice', 'beans', true, false, false, false, false]
+console.log(mixedDataType.length)
+
+// number 6
+const itCompanies = ['Facebook', 'Google', 'Microsoft', 'Apple', 'IBM', 'Oracle','Amazon']
+
+// number 7
+console.table(itCompanies)
+
+// number 8
+console.log(itCompanies.length)
+
+// number 9
+console.table(itCompanies[0])
+console.table(itCompanies[2])
+console.table(itCompanies[6])
+
+// number 10
+console.table(itCompanies[0])
+console.table(itCompanies[1])
+console.table(itCompanies[2])
+console.table(itCompanies[3])
+console.table(itCompanies[4])
+console.table(itCompanies[5])
+console.table(itCompanies[6])
+
+// number 11
+const upper0 = itCompanies[0].toUpperCase()
+const upper1 = itCompanies[1].toUpperCase()
+const upper2 = itCompanies[2].toUpperCase()
+const upper3 = itCompanies[3].toUpperCase()
+const upper4 = itCompanies[4].toUpperCase()
+const upper5 = itCompanies[5].toUpperCase()
+const upper6 = itCompanies[6].toUpperCase()
+console.log(upper0)
+console.log(upper1)
+console.log(upper2)
+console.log(upper3)
+console.log(upper4)
+console.log(upper5)
+console.log(upper6)
+
+// number 12
+console.log(`${itCompanies[0]} , ${itCompanies[1]} , ${itCompanies[2]} , ${itCompanies[3]} , ${itCompanies[4]} , ${itCompanies[5]} and ${itCompanies[6]} are big IT companies`)
+
+// number 13
+const exist = itCompanies.includes('Facebook')
+
+    if (exist == true) {
+        console.log(itCompanies[0])
+    }else{
+        console.log('comany not found')
+    }
+
+// number 14