CODEWITHSUNDEEP
phparraysloopsmatrix
Марко Лучић
Марко Лучић

Reputation: 91

php - matrix - where I am making a mistake?

Create a program with the following output:

a 00000000
b 00000000
c 00000X00
d 00000000
e 00000000
f 000X0000
g 00000000
h 00000X00
12345678

The user enters two-dimensional array at the beginning of the program. Based on this sequence (coordinates) are drawn X's on the table.

Conditions: Must be used arrays and loops.

I`m 18 and I started to learn php 2 weeks ago. Im having trouble with this task. Can anyone help me ? THANKS!

SORRY!

this is what I`ve done:

<?php
$input = array(2 => array(5),5 => array(3),7 => array(6));
$range = array('a','b','c','d','e','f','g','h');
$length = 8;

$output = '';
foreach($range as $index => $letter)
{
$output .= "$letter ";

for($i = 0; $i < $length; ++$i)
{
$output .= (array_key_exists($index, $input) && in_array($i, $input[$index])) ? 'X' : '0';
}

$output .= "\n";
}

echo $output;
?>

i got this output:

a 00000000
b 00000000
c 00000X00
d 00000000
e 00000000
f 000X0000
g 00000000
h 000000X0

instead of this:

a 00000000
b 00000000
c 00000X00
d 00000000
e 00000000
f 000X0000
g 00000000
h 00000X00
12345678

Where I am making a mistake?

Upvotes: 1

Views: 131

Answers (2)

Manjeet Barnala
Manjeet Barnala

Reputation: 2995

<?php
$input = array(2 => array(5),5 => array(3),7 => array(5));
$range = array('a','b','c','d','e','f','g','h');
$length = 8;

$output = '';
$x='';
foreach($range as $index => $letter)
{
    $output .= "$letter ";
    for($i = 0; $i < $length; ++$i)
    {
        $output .= (array_key_exists($index, $input) && in_array($i, $input[$index])) ? 'X' : '0';
    }

    $output .= "\n";
    $x.= 1+$index;
}

$output .= $x;
echo $output;

?>

this will output

a 00000000
b 00000000
c 00000X00
d 00000000
e 00000000
f 000X0000
g 00000000
h 00000X00
12345678

Upvotes: 0

Ashley
Ashley

Reputation: 5957

7 => array(6) should be 7 => array(5)

http://sandbox.onlinephpfunctions.com/code/423262c6a4bcdb8693c179dc620966d779b65a51

Upvotes: 1

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