From 2d6f8f825dd2c0b74a3b726b38282da9827b9fc0 Mon Sep 17 00:00:00 2001
From: leon-vay <leonvay00@gmail.com>
Date: Tue, 8 Aug 2023 21:17:52 -0700
Subject: [PATCH] finished level 2. Started level 3

---
 solutions/day-01/countries.js | 15 ---------
 solutions/day-01/level2.js    | 48 +++++++++++++++++++++++++---
 solutions/day-01/level3.js    | 59 +++++++++++++++++++++++++++++++++++
 solutions/day-01/web_tech.js  | 11 -------
 solutions/index.html          |  9 ++++++
 5 files changed, 112 insertions(+), 30 deletions(-)
 delete mode 100644 solutions/day-01/countries.js
 create mode 100644 solutions/day-01/level3.js
 delete mode 100644 solutions/day-01/web_tech.js
 create mode 100644 solutions/index.html

diff --git a/solutions/day-01/countries.js b/solutions/day-01/countries.js
deleted file mode 100644
index 2b703a1..0000000
--- a/solutions/day-01/countries.js
+++ /dev/null
@@ -1,15 +0,0 @@
-const countries = [
-    'Albania',
-    'Bolivia',
-    'Canada',
-    'Denmark',
-    'Ethiopia',
-    'Finland',
-    'Germany',
-    'Hungary',
-    'Ireland',
-    'Japan',
-    'Kenya',
-  ]
-
-export { countries };
\ No newline at end of file
diff --git a/solutions/day-01/level2.js b/solutions/day-01/level2.js
index ed6f90b..857e3d3 100644
--- a/solutions/day-01/level2.js
+++ b/solutions/day-01/level2.js
@@ -1,8 +1,29 @@
-import { countries } from "./countries";
-// import { webTechs } from "./web_tech";
+const countries = [
+    'Albania',
+    'Bolivia',
+    'Canada',
+    'Denmark',
+    'Ethiopia',
+    'Finland',
+    'Germany',
+    'Hungary',
+    'Ireland',
+    'Japan',
+    'Kenya',
+  ];
+
+const webTechs = [
+    'HTML',
+    'CSS',
+    'JavaScript',
+    'React',
+    'Redux',
+    'Node',
+    'MongoDB',
+  ]
 
 /**
- * EXERCISE: Level 2
+ * EXERCISE: LEVEL 2
  */
 
 // 1. Create a separate countries.js file and store the countries array into this file, 
@@ -32,4 +53,23 @@ console.log(shoppingCart);
 
 // 4. In countries array check if 'Ethiopia' exist in the array if it exists print 'ETHIOPIA'. If it does not exist add
 //    to the countries list
-console.log(countries)
\ No newline at end of file
+if (countries.includes("Ethiopia")) {
+    console.log('ETHIOPIA');
+} else {
+    countries.push('Ethiopia');
+}
+
+// 5. In webTechs array check is Sass exists in the array and if it exists print 'Sass is a CSS preprocess'. 
+//    If it does not exist add Sass to the array and print the array
+if (webTechs.includes('Sass')) {
+    console.log('Sass is a CSS preprocess');
+} else {
+    webTechs.push('Sass');
+    console.log(webTechs);
+}
+
+// 6. Concatenate the following two variable and store it in a fullStack variable
+const frontEnd = ['HTML', 'CSS', 'JS', 'React', 'Redux'];
+const backEnd = ['Node', 'Express', 'MongoDB'];
+const fullStack = frontEnd.concat(backEnd);
+console.log(fullStack);
\ No newline at end of file
diff --git a/solutions/day-01/level3.js b/solutions/day-01/level3.js
new file mode 100644
index 0000000..6027055
--- /dev/null
+++ b/solutions/day-01/level3.js
@@ -0,0 +1,59 @@
+/**
+ * EXERCISE: LEVEL 3
+ */
+
+const countries = [
+    'Albania',
+    'Bolivia',
+    'Canada',
+    'Denmark',
+    'Ethiopia',
+    'Finland',
+    'Germany',
+    'Hungary',
+    'Ireland',
+    'Japan',
+    'Kenya',
+  ]
+
+/**
+ * 1. The following is an array of 10 students ages.
+ * - Sort the array and find the min and max age
+ * - Find the median age(one middle item or two middle items divided by two)
+ * - Find the average age(all items divided by number of items)
+ * - Find the range of the ages(max minus min)
+ * - Compare the value of (min - average) and (max - average), use abs() method
+ */
+const ages = [19, 22, 19, 24, 20, 25, 26, 24, 25, 24]
+ages.sort()
+
+let min = Math.min(...ages)
+let max = Math.max(...ages)
+
+let median
+
+if (ages.length % 2 === 0) {
+    median = (ages[ages.length / 2] + ages[ages.length / 2 - 1]) / 2 
+} else {
+    median = ages[ages.length / 2]
+}
+
+let sum = 0
+for (let i = 0; i < ages.length; i++) {
+    sum += ages[i]
+}
+let average = sum / ages.length
+
+let range = Math.max(...ages) - Math.min(...ages)
+
+// 2. Slice the first ten coutries from the countries array
+let firstTen = countries.slice(10)
+
+// 3. Find the middle countries in the countries array
+let middleCountries = countries[Math.floor(countries.length / 2)]
+
+// 4. Divide the countries array into two equal arrays if it is even. If countries is not even, one more country for the first half
+let middle = Math.floor((countries.length - 1) / 2)
+const firstHalf = countries.splice(0, middle)
+const secondHalf = countries.splice(-middle)
+
diff --git a/solutions/day-01/web_tech.js b/solutions/day-01/web_tech.js
deleted file mode 100644
index 2b3133a..0000000
--- a/solutions/day-01/web_tech.js
+++ /dev/null
@@ -1,11 +0,0 @@
-const webTechs = [
-    'HTML',
-    'CSS',
-    'JavaScript',
-    'React',
-    'Redux',
-    'Node',
-    'MongoDB',
-  ];
-
-  export { webTechs };
\ No newline at end of file
diff --git a/solutions/index.html b/solutions/index.html
new file mode 100644
index 0000000..98ac388
--- /dev/null
+++ b/solutions/index.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Solutions Tester</title>
+    </head>
+    <body>
+        <script src="day-01/level3.js"></script>
+    </body>
+</html>
\ No newline at end of file