Jack Pires

src/challenge1.js

@@ -1,2 +1,6 @@
 // Using the function keyword declare a function called `greet`
 // that returns a String "Hi, Ed!"
+
+function greet() {
+    return "Hi, Ed!"
+}

src/challenge2.js

@@ -0,0 +1,5 @@
+//Declare a `function` called `greet` that has 1 argument called `name` and returns a String `"Hi, <name>!"`
+
+function greet(name) {
+    return ("Hi, " + name)
+}

src/challenge3.js

@@ -0,0 +1,3 @@
+//Same as Challenge 2 - this time use an arrow function
+
+const greet = name => "Hi, " + name;

src/challenge4.txt

@@ -0,0 +1,10 @@
+#### Requirements
+In a markdown or text file called `challenge4.md` or `challenge4.txt`, write an explanation of
+- what `First Class` functions are
+- how this concept applies in JS.
+- what the difference is between declaring a function and calling it
+- Bonus: give examples for each explanation
+
+A first class function is a function which is able to be manipulated like any other variable within its programming language. JavaScript has first class functions as they can be passed as parameters or manipulated the same as any other variable within the language.
+
+Declaring a function is the process of defining what parameters a function takes and what commands it executes upon those parameters before ultimately returning a value. Calling a function is the process of passing the required parameters to a function and receiving an output according to the commands it performs. A function may be called many times upon executing a program, however it will likely only have one declaration (perhaps more if optional parameters may be provided and those cause the function to need slightly different commands.)

src/challenge5.js

@@ -0,0 +1,16 @@
+/*#### Requirements
+Use class syntax to create a Student class that initializes with a name property and has a method that returns the capitalised name.
+*/
+
+class Student {
+    constructor(name) {
+        this.name = name
+    }
+
+    capitalisedName() {
+        return (this.name[0].toUpperCase() + this.name.slice(1))
+    }
+}
+
+let student = new Student("asia")
+student.capitalisedName() // "Asia"

src/challenge6.js

@@ -0,0 +1,64 @@
+/*#### Requirements
+I want to be able to encrypt a string using letter-number substitution according to this[table of values](https://gist.github.com/dearshrewdwit/691c71616995ad2430ab309aa9998745)
+
+"E" -> "32"
+"d" -> "5"
+"Ed" -> "325"
+"Hi, Ed!" -> "351078132554"
+
+    Use your best judgment with your pair partner.If you want clarification, ask your coach.
+*/
+
+//Stores the key-value pairs for encryption.
+class Keys {
+    constructor() {
+        this._keys = new Array();
+    }
+
+    get keys() {
+        return (this._keys)
+    }
+
+    //Assigns key-value pairs for encryption
+    addKey(key_pair) {
+        this._keys.push([key_pair[0], key_pair.slice(3)]);
+    }
+}
+
+//Converts a character to a number.
+function convert(char) {
+    for (let i = 0; i < keys.keys.length; i++) {
+        if (char === keys.keys[i][0]) {
+            return (keys.keys[i][1]);
+        }
+    }
+}
+
+//Converts a string into the equivalent encrypted form.
+function encryptString(string) {
+    let encrypted_string = ''
+    for (let i = 0; i < string.length; i++) {
+        encrypted_string += convert(string[i])
+    }
+    return (encrypted_string);
+}
+
+//Initialise required packages and set up the keys for parsing.
+const keys = new Keys()
+const readline = require('readline');
+const fs = require('fs');
+
+const rl = readline.createInterface({
+    input: fs.createReadStream('src\\challenge6.txt')
+});
+
+//Listens for events as rl reads the file.
+rl.on('line', (line) => {
+    if (line !== "character, value") {
+        keys.addKey(line);
+    }
+})
+    .on('close', function () {
+        console.log(encryptString("Hi, Ed!"));
+    })
+

src/challenge6.txt

@@ -0,0 +1,98 @@
+character, value
+ , 1
+a, 2
+b, 3
+c, 4
+d, 5
+e, 6
+f, 7
+g, 8
+h, 9
+i, 10
+j, 11
+k, 12
+l, 13
+m, 14
+n, 15
+o, 16
+p, 17
+q, 18
+r, 19
+s, 20
+t, 21
+u, 22
+v, 23
+w, 24
+x, 25
+y, 26
+z, 27
+A, 28
+B, 29
+C, 30
+D, 31
+E, 32
+F, 33
+G, 34
+H, 35
+I, 36
+J, 37
+K, 38
+L, 39
+M, 40
+N, 41
+O, 42
+P, 43
+Q, 44
+R, 45
+S, 46
+T, 47
+U, 48
+V, 49
+W, 50
+X, 51
+Y, 52
+Z, 53
+!, 54
+@, 55
+£, 56
+$, 57
+%, 58
+^, 59
+&, 60
+*, 61
+(, 62
+), 63
+-, 64
+_, 65
+=, 66
++, 67
+[, 68
+], 69
+{, 70
+}, 71
+;, 72
+:, 73
+', 74
+", 75
+\, 76
+|, 77
+,, 78
+., 79
+<, 80
+>, 81
+/, 82
+?, 83
+`, 84
+~, 85
+§, 86
+±, 87
+1, 88
+2, 89
+3, 90
+4, 91
+5, 92
+6, 93
+7, 94
+8, 95
+9, 96
+0, 97