From b3bf61fb29e23f3db5b5b4c21ed0c1bded34a0ba Mon Sep 17 00:00:00 2001
From: Jarek Stelmach <j.stelmach@onet.eu>
Date: Thu, 7 Mar 2024 18:00:39 +0100
Subject: [PATCH 1/5] Finished ex 1 in arrays

---
 01/app.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/01/app.js b/01/app.js
index e69de29..3a66e14 100644
--- a/01/app.js
+++ b/01/app.js
@@ -0,0 +1,7 @@
+const users = ["Jan Kowalski", "Marta Kieliszek", "Zenon Gminny", "Albert Sosna", "Michał Bułka"]
+
+console.log(users[0]);
+console.log(users[2]);
+console.log(users[4]);
+
+console.log("Tablica zwiera =", users.length);
\ No newline at end of file

From c4c4ad2d5c7f557448ce62f3d8db7ebee4efdd5f Mon Sep 17 00:00:00 2001
From: Jarek Stelmach <j.stelmach@onet.eu>
Date: Thu, 7 Mar 2024 18:27:09 +0100
Subject: [PATCH 2/5] Finished ex 2 in arrays

---
 02/app.js | 30 ++++++++++++++++++++----------
 1 file changed, 20 insertions(+), 10 deletions(-)

diff --git a/02/app.js b/02/app.js
index 9ad302b..c023a85 100644
--- a/02/app.js
+++ b/02/app.js
@@ -1,23 +1,33 @@
-const randomArray = createRandomArray();
-console.log(randomArray);
+const randomArray = createRandomArray()
+console.log(randomArray)
 
+for (let i = 0; i < randomArray.length; i++) {
+	console.log(randomArray[i])
+}
+
+randomArray.forEach(function (el) {
+	console.log(el)
+})
 
 
+console.log(randomArray[randomArray.length - 1]);
+
 // nie modyfikuj kodu poniżej!
 
 // funkcję może deklarować poniżej wywołania
 // ponieważ w JS występuje mechanizm tzw. hoisting-u
 
 function createRandomArray() {
-    const arr = [];
-    const len = getRandomInteger(1, 10)
-    for(let i=0; i<len; i++) {
-        arr.push( getRandomInteger(1, 100) );
-    }
+	const arr = []
+	const len = getRandomInteger(1, 10)
+	for (let i = 0; i < len; i++) {
+		arr.push(getRandomInteger(1, 100))
+	}
 
-    return arr;
+	console.log(arr)
+	return arr
 }
 
 function getRandomInteger(min, max) {
-    return Math.round(Math.random() * (max-min) + min);
-}
\ No newline at end of file
+	return Math.round(Math.random() * (max - min) + min)
+}

From 7a7c7eda6ca90db7b937811c9194a635f022d0b8 Mon Sep 17 00:00:00 2001
From: Jarek Stelmach <j.stelmach@onet.eu>
Date: Thu, 7 Mar 2024 19:10:44 +0100
Subject: [PATCH 3/5] Finished ex 3 in arrays

---
 03/app.js | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/03/app.js b/03/app.js
index cebcbc2..7a0666b 100644
--- a/03/app.js
+++ b/03/app.js
@@ -1,2 +1,21 @@
 const n = 24;
-const oddNumbers = [];
\ No newline at end of file
+const oddNumbers = [];
+
+
+
+for (let i=1; i<=n; i++) {
+
+    if (i % 2 !==0) {
+
+        oddNumbers.push(i)
+    }
+}
+
+console.log(oddNumbers);
+
+
+
+
+
+
+

From 1c76c7a8c69d3b8f740252623cea78e98f0478c7 Mon Sep 17 00:00:00 2001
From: Jaro <jaroswidnik@interia.pl>
Date: Fri, 8 Mar 2024 09:59:43 +0100
Subject: [PATCH 4/5] Finished ex 4 for arrays

---
 04/app.js | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/04/app.js b/04/app.js
index 8285afd..7391243 100644
--- a/04/app.js
+++ b/04/app.js
@@ -1 +1,17 @@
-const years = [1980, 1934, 2002, 2019];
\ No newline at end of file
+const years = [1980, 1934, 2002, 2019];
+const differenceYearsArr = [];
+
+const currentDate = new Date();
+const currentYear = currentDate.getFullYear();
+
+// console.log(currentYear);
+
+years.forEach(function (el) {
+	// console.log(el);
+	const amountOfYears = currentYear - el;
+	// console.log(amountOfYears);
+
+	differenceYearsArr.push(amountOfYears);
+});
+
+console.log(differenceYearsArr);

From 78580ddf7c85743b1144c8f234c1b65f966f0622 Mon Sep 17 00:00:00 2001
From: Jaro <jaroswidnik@interia.pl>
Date: Fri, 8 Mar 2024 10:19:37 +0100
Subject: [PATCH 5/5] Finished ex 5 in arrays

---
 05/app.js | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/05/app.js b/05/app.js
index 1c6bb90..55be70b 100644
--- a/05/app.js
+++ b/05/app.js
@@ -1 +1,13 @@
-const numbers = [1, 2, 3, 4, 5, 6, 7];
\ No newline at end of file
+const numbers = [1, 2, 3, 4, 5, 6, 7];
+
+const evenNumbers = numbers.filter(function(el) {
+    return el % 2 === 0
+})
+
+console.log("Tablica z liczbami parzystymi", evenNumbers);
+
+const sumEvenNumbers = evenNumbers.reduce(function(a, b) {
+    return a + b;
+}, 0);
+
+console.log("Suma liczb parzystych to", sumEvenNumbers);
\ No newline at end of file