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<?php

/**
 * Titel and introduction to the lab.
 */
$dictNames = [
["Baggins", "Aragorn", "Smaug"],
["Solo", "Skywalker", "Vader"],
["Chandler", "Monica", "Ross"],
["Clinton", "Obama", "Bush"],
["Jagger", "Diamond", "Cash"]
];
$dictNrs = [
[55523412, 55564222, 55567894],
[55511243, 55568711, 55590858],
[55523645, 55564452, 55545872],
[55590899, 55567345, 55564533],
[55537654, 55598078, 55587768]
];
$r1 = 2; // 0-4
$r2 = 4;// 0-4
$sr1 = 1; // 0-2
$tuples = [
["frog", 54, 4.77, "fridge", 2],
["bear", 65, 6.47, "chair", 5],
["moose", 12, 1.98, "table", 7],
["elephant", 33, 7.28, "stove", 4],
["snake", 89, 9.63, "bookshelf", 1]
];


return [



/**
 * Titel and introduction to the lab.
 */
"title" => "Lab 4 - python",

"intro" => "
<p>???????
</p>
",


"sections" => [



/** ===================================================================================
 * New section of exercises.
 */
[
"title" => "Dictionaries",

"intro" => "
<p>???????????</p>
",

"shuffle" => false,

"questions" => [



/** -----------------------------------------------------------------------------------
 * A question.
 */
[

"text" => '
<p>Create a small phonebook using a dictionary. Use the names as keys and numbers as values. Use "' . implode(", ", $dictNames[$r1]) . '" and corresponding numbers: ' . implode(", ", $dictNrs[$r1]) . '. Answer with the keys comma-separated, sorted in an alphabetical and ascending order and in a string.
</p>
',

"answer" => function () use ($dictNames, $r1) {
    
    $res = $dictNames[$r1];
    asort($res);
    return implode(",", $res);
},

],



/** -----------------------------------------------------------------------------------
 * A question.
 */
[

"text" => '
<p>Use your phonebook and answer with the values (phonenumbers) comma-separated, in ascending order and as a string. 
</p>
',

"answer" => function () use ($dictNrs, $r1) {
    
    $res = $dictNrs[$r1];
    asort($res);
    return (string)implode(",", $res);
},

],



/** -----------------------------------------------------------------------------------
 * A question.
 */
[

"text" => '
<p>Use the "get() method" on your phonebook and answer with ' . $dictNames[$r1][$sr1] . '\'s phonenumber. Answer with an integer. 
</p>
',

"answer" => function () use ($dictNrs, $r1, $sr1) {
    
    return (int)$dictNrs[$r1][$sr1];
},

],



/** -----------------------------------------------------------------------------------
 * A question.
 */
[

"text" => '
<p>Use the "get() method" on your phonebook and answer with ' . $dictNames[$r1][$sr1] . '\'s phonenumber. Answer with an integer. 
</p>
',

"answer" => function () use ($dictNrs, $r1, $sr1) {
    
    return (int)$dictNrs[$r1][$sr1];
},

],



/** -----------------------------------------------------------------------------------
 * A question.
 */
[

"text" => '
<p>Open "alice.txt" and create a dictionary that holds all words as separate keys and the frequency as values. Find out how many times the word: "youth" is used in the text and answer with the right integer. 
</p>
',

"answer" => function () {
    // Use: line = line.translate(str.maketrans("", "", string.punctuation))
    // Dont use: line = line.translate(string.punctuation)
    return 6;
},

],



/** -----------------------------------------------------------------------------------
 * A question.
 */
[

"text" => '
<p>Use your dictionary over "alice.txt" and find the key that have a value of 4 and has exactly 5 characters. Answer with the key as a string. 
</p>
',

"answer" => function () {
    
    return "other";
},

],



/**
 * Closing up this section.
 */
], // EOF questions
], // EOF section



/** ===================================================================================
 * New section of exercises.
 */
[
"title" => "Tuples",

"intro" => "
<p>???????????</p>
",

"shuffle" => false,

"questions" => [



/** -----------------------------------------------------------------------------------
 * A question.
 */
[

"text" => '
<p>Create a tuple with (' . implode(", ", $tuples[$r2]) . '). Answer with the length of the tuple as an integer.
</p>
',

"answer" => function () use ($tuples, $r2) {
    
    return count($tuples[$r2]);
},

],



/** -----------------------------------------------------------------------------------
 * A question.
 */
[

"text" => '
<p>Create a tuple with (' . implode(", ", $tuples[$r1]) . '). Replace the second element with: "' . $dictNames[$r2][$sr1] . '". Answer with the first three elements in a comma-separated string.
</p>
',

"answer" => function () use ($tuples, $r1, $dictNames, $r2, $sr1) {
    $temp = $tuples[$r1];
    $repl = $dictNames[$r2][$sr1];
    $temp[1] = $repl;
    return (string)implode(",", array_slice($temp, 0, 3));
},

],



/** -----------------------------------------------------------------------------------
 * A question.
 */
[

"text" => '
<p>Open "alice.txt" and find the 5 most frequently used words in the text. Answer with a comma-separated string in the format: "word:number,word:number" etc, in ascending order.
</p>
',

"answer" => function () {
    
    return "the:66,said:37,and:35,you:34,to:33";
},

],



/** -----------------------------------------------------------------------------------
 * A question.
 */
[

"text" => '
<p>Use the two tuples: (' . implode(",",$tuples[0]) . ') and (' . implode(",",$tuples[4]) . '). Name the tuples "tupleOne" and "tupletwo" and then swap the values and answer with a float value representing the sum of the second and third element in "tupleOne";
</p>
',

"answer" => function () use ($tuples) {
    
    return 98.63;
},

],



/** -----------------------------------------------------------------------------------
 * A question.
 */
[

"text" => '
<p>Open "httpd-access.txt" and find the ip-adress with the most entries. Answer with sum of all digits in the ip-adress as an integer.
</p>
',

"answer" => function () {
    
    return 30;
},

],



/**
 * Closing up this section.
 */
], // EOF questions
], // EOF section



/** -----------------------------------------------------------------------------------
 * Closing up all sections.
 */
] // EOF sections



/**
 * Closing up this lab.
 */
]; // EOF the enritre lab