Vertical Table (Printing array data from top to bottom)

I took it as a challenge and wrapped that up in few minutes. But at that time I was so close to the problem that I could not see that PHP has some inbuilt functions which can help me do that and I did it other way around without using inbuilt PHP function. Here is the sample code for the same, which prints table vertically with the help of inbuilt PHP function array_chunk.

Array is the most powerful feature of PHP and playing with array is always been fun.

// Function to print array data vertically
function print_vertical_table_sys($data_list, $rows)
{
	$columns = (count($data_list)/$rows);
	$data_list = array_chunk($data_list, $rows);
 
	echo '
<table border="1" style="border-collapse:collapse">';
	for($row_index = 0; $row_index < $rows; $row_index++)
	{
		echo '
<tr>' . "\r\n";
		for($column_index = 0; $column_index < $columns; $column_index++)
		{
			echo '
<td>' . $data_list[$column_index][$row_index] . '</td>
 
' . "\r\n";
		}
		$column_index = 0;
		echo '</tr>
 
' . "\r\n";
	}
	echo '</table>
 
';
}
 
// Function Usage
$list = array();
for($i = 0; $i &lt;= 59; $i++)
{
	$list[] = $i+1;
}
//print_vertical_table_sys ($list, 10);

Now my question to you is how would you do that if you come across such requirement? Assume that you have list of array items starting from 1, 2, 3, ..... N and you want to print it with fixed length rows which starts like 1 and next cell will have 11 or something similar (similar to what you see in above image).

It's not that difficult but I would suggest give it a try and you will enjoy. Doesn't matter what technology you work with as the example which I will show you not will not use any functionality specific to PHP. Basically above code snippet is very close to that but I would suggest that before reading further more you give it a try. Come out of your regular work and make this fun exercise.

Plain code snippet (which is in PHP but it will work with any language of your choice with little syntax change)

// This function do not use any inbuilt function, just loops through array
function print_vertical_table($data_list, $rows)
{
	$columns = ceil(count($data_list)/$rows);
 
	$data_count = count($data_list);
	echo '
<table border="1" style="border-collapse:collapse">';
	for($row_index = 0; $row_index  < $rows; $row_index++)
	{
		echo '
<tr>' . "\r\n";
		for($column_index = 0; $column_index < $columns; $column_index++)
		{
			echo '
<td>' . $data_list[($column_index*$rows)+$row_index] . '</td>
 
' . "\r\n";
		}
		echo '</tr>
 
' . "\r\n";
	}
	echo '</table>
 
';
}
 
// Can be used same as another one
$list = array();
for($i = 0; $i &lt;= 59; $i++)
{
	$list[] = $i+1; // To prepare sample data
}
print_vertical_table ($list, 10);

I hope it was fun, so if you tried that what was your score?

Here is source as text-file.

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My favorite is James Watts and Francisco Jose Martin Moreno's following one which uses preg_match:

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I looked at the error, users were unable to download files from Portal over secure-HTTP (HTTPS). I tried it couple of times and found that it's not working really. Error was consistent from IE6 to IE8.

We have to fix this and to begin with I just googled-up with the error message I was getting. "Internet Explorer was not able to open this Internet site. The requested site is either unavailable or cannot be found. Please try again later." Thankfully I got decent amount of Google search results and in first 2 or 3 I found a post from Mark Kolich sharing his similar experience with Internet Explorer and digging in more about that bug.

You can read more about this on Mark's post here on his website. But simple enough it was just a one line fix for the PHP guys. Yes, we have to add following line to get rid of the error message.

header("Pragma: ");

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Your XAML code has repeated the same code again, causing a clash.

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It was more about basic math rather than programming and it was good to see everyone refreshing their mind with roots of math/programming. I am sharing this puzzle/question on my blog and want my reader to put their mind and some of their time to crack this and put down their results as comments on this post.

Here we go:

Assume that you have a abstract computer, so forget everything you know about computers, this one only does what I am about to tell you it does.

• You can use as many variables as you need,
• There are no negative numbers,
• All numbers are integers.
• You do not know the size of the integers, they could be infinitely large, so you cannot count on truncating at any point.
• There are NO comparisons allowed, no if statements or anything like that.
• There are only four operations you can do on a variable.

1. You can set a variable to 0.
2. You can set a variable = another variable.
3. You can increment a variable (only by 1), and it is a post increment.
4. You can loop. So, if you were to say loop(v1) and v1 = 10, your loop would execute 10 times, but the value in v1 would not change so the first line in the loop can change value of v1 without hanging the number of times you loop.

You need to perform 3 operations:

1. Write a function that decrements by 1.
2. Write a function that subtracts one variable from another.
3. Write a function that divides one variable by another.
   (See if you can implement all 3 using at most 4 variables.)

Meaning, you are not making function calls now, you are making macros. And at most you can have 4 variables.

The restriction really only applies to divide, the other 2 are easy to do with 4 variables or less. Division on the other hand is dependent on the other 2 functions, so, if subtract requires 3 variables, then divide only has 1 variable left unchanged after a call to subtract.

Basically, just make your function calls to decrement and subtract so you pass your variables in by reference, and you can not declare any new variables in a function, what you pass in is all it gets.

Although one can search through Internet to get the answer to this Question but it would be fun to see how long it takes one to crack it and how much of 3 operations.

Readers if you try this, please write down your scores (Time and no of Operations) as a comment. I am sure I don't need to put on the answer here.Similar Posts:

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