Completed Challenges

Challenge 1 - Sorting/challenge1.php

@@ -1,2 +1,45 @@
 <?php
 
+Class MakeSort{
+    private $numbers = array();
+    private $max;
+    private $min;
+
+    function __construct(int $min,int $max){
+        $this->max = $max;
+        $this->min = $min;
+    }
+
+    public function sortNumbers(){
+        //Even though it's set to 100 numbers, count in case it changes later.
+        $count = count($this->numbers);
+
+        for($i = 0; $i < $count; $i++){
+            for($j = 0;$j < $count-1; $j++){
+                if($this->numbers[$j] > $this->numbers[$j+1]){
+                    $k = $this->numbers[$j+1];
+                    $this->numbers[$j+1] = $this->numbers[$j];
+                    $this->numbers[$j] = $k;
+                }
+            }
+        }
+
+        return $this->numbers;
+    }
+
+    public function genNum(){
+        for($i = 0; $i < 100; $i++){
+            //this highlights why we don't use rand or mt_rand for true randomness.
+            $this->numbers[] = rand($this->min,$this->max);
+        }
+
+        return $this->numbers;
+    }
+}
+$class = new MakeSort(1,99);
+print_r('Unsorted List:');
+print_r($class->genNum());
+print_r('Sorted Numbers:');
+print_r($class->sortNumbers());
+
+?>

Challenge 2 - Uppercase/challenge2.php

@@ -1,2 +1,17 @@
 <?php
 
+Class GetThatUpper{
+    public static function getUpper(string $string){
+        $vars = explode(' ',$string);
+        $final = array();
+        foreach($vars as $var){
+            $var[0] = strtoupper($var[0]);
+            $final[] = $var;
+        }
+        return implode(' ',$final);
+    }
+}
+
+print_r(GetThatUpper::getUpper('in-touch insight systems inc. programming challenge number 2'));
+
+?>

Challenge 3 - Cryptography/challenge3.php

@@ -1,2 +1,5 @@
 <?php
 
+//This one has got me stumped pretty good. 
+
+?>

Challenge 4 - 3n+1/challenge4.php

@@ -0,0 +1,20 @@
+<?PHP
+
+function algorithm($n){
+    do{
+        switch($n % 2){
+            case 0:
+                $n = $n / 2;
+                print_r($n . "<br />");
+                break;
+            default:
+                $n = ($n*3)+1;
+                print_r($n . "<br />");
+                break;
+        }
+    } while($n != 1);
+}
+
+algorithm(57);
+
+?>