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Challenge Accepted #2

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7a6f5de
finished strpos
gregimba Jul 24, 2014
eec0f63
THE-BOX
gregimba Jul 24, 2014
b9838fe
code comprehension
gregimba Jul 28, 2014
98553cb
fixed problem with multiple charachters false postives
gregimba Jul 28, 2014
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17 changes: 17 additions & 0 deletions challenges/THE BOX/index.html
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<!DOCTYPE html>
<html>
<head>
<title>THE BOX</title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<div id="orange"></div>
<div id="dark_green"></div>
<div id="light_green"></div>
<div id="dark_blue"></div>
<div id="medium_dark_blue"></div>
<div id="medium_light_blue"></div>
<div id="light_blue"></div>

</body>
</html>
56 changes: 56 additions & 0 deletions challenges/THE BOX/style.css
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div {
position: absolute;
}

#orange {
background-color: #F1AB3c;
width: 400px;
height: 400px;
left: 160px;
top: 10px;
}

#dark_green {
background-color: #68884b;
width: 140px;
height: 190px;
top: 10px;
}

#light_green {
background-color: #7fBB4d;
width: 140px;
height: 190px;
top: 220px;
}

#dark_blue {
background-color: #2669A4;
width: 290px;
height: 90px;
top: 420px;
}

#medium_dark_blue {
background-color: #4994DC;
width: 90px;
height: 90px;
left: 310px;
top: 420px;
}

#medium_light_blue {
background-color: #87BFF4;
width: 150px;
height: 40px;
top: 420px;
left: 410px;
}

#light_blue {
background-color: #B6DBFE;
width: 150px;
height: 40px;
top: 470px;
left: 410px;
}
13 changes: 13 additions & 0 deletions challenges/comprehension/explanation.txt
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@ defines an array or list or something of that nature

% defines a variable

$ defines an array or something

The while loop takes a line from a text file and splits it by " " into an array.
Then the for each takes a chunk from that array and checks if it matches some string or regexp ( I have never used regexp's). If a match exists it then puts the chunk into an array or stack called storage. If a match does not exist it just shoves it into the second slot in the array assuming it starts at 0.

The for each at the bottom prints the index and chunk from the array in storage with some pretty printing.


49 changes: 47 additions & 2 deletions challenges/strpos/strpos.php
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@@ -1,8 +1,47 @@
<?php

function my_strpos(/* arguments go here! */)
function my_strpos($whole_string, $chunk_string, $position_check=false)
{
# Your code goes here!
$chunk_string_char_array = str_split($chunk_string);
$whole_string_array = str_split($whole_string);

if ($position_check !== false) { // This works and checks out
if ($chunk_string_char_array[0] == $whole_string_array[$position_check]) {
return true;
}
return false;
}

$count = count($chunk_string_char_array);
$array_position = 0;
$whole_position = 0;

foreach ($whole_string_array as $character) { //Go through the alphabet
if ($character == $chunk_string_char_array[0]) { //Check the first character

if ($count > 1) { // If array is larger than one char
$whole_peek = 1;
$still_matching = true;

for ($chunk_index=1; $chunk_index < $count && $array_position + $whole_peek < count($whole_string_array); $chunk_index++,$whole_peek++) {
if ($chunk_string_char_array[$chunk_index] != $whole_string_array[$array_position + $whole_peek]) {
$still_matching = false;
continue;
}
}
if ($still_matching) {
return $array_position;
}

} else {
return $array_position;
}

}
$array_position++;
$whole_position++;
}
return false;
}

$alphabet = 'abcdefghijklmnopqrstuvwxyz';
Expand All @@ -13,6 +52,12 @@ function my_strpos(/* arguments go here! */)
# Should print "6"
print(my_strpos($alphabet, 'ghi') . "\n");

print(my_strpos($alphabet, 'gh!') . "\n");
print(my_strpos($alphabet, 'g!i') . "\n");

var_dump(my_strpos($alphabet, 'a', 0));


# Should print "bool(false)"
var_dump(my_strpos($alphabet, 'u', 22));

Expand Down