Please note, this is a STATIC archive of website www.w3resource.com from 19 Jul 2022, cach3.com does not collect or store any user information, there is no "phishing" involved.
w3resource

PHP Exercises: Compute the sum of the numbers in a given array except those numbers starting with 5 followed by atleast one 6

PHP Basic Algorithm: Exercise-109 with Solution

Write a PHP program to compute the sum of the numbers in a given array except those numbers starting with 5 followed by atleast one 6. Return 0 if the given array has no integer.

Sample Solution:

PHP Code :

<?php
function test($nums)
 {
      $sum = 0;
      $inSection = 0;
      $flag = 0;
      for ($i = 0; $i < sizeof($nums); $i++)
            {
                $inSection = 0;
                if ($nums[$i] == 5)
                {
                $inSection = 0;
                $flag = 1;
                }
                if ($inSection == 0 && $nums[$i] == 6)
                {
                  if ($flag == 1)
                  {
                  $sum = $sum - 5;
                  $inSection = 1;
                  }
                   $flag = 0;
                }
                if ($inSection == 0)
                {
                  $sum += $nums[$i];
                }
            }
            return $sum;
 }
echo "Sum of the numbers of the said array except those numbers starting with 5 followed by atleast one 6:\n". test([1, 5, 7, 9, 10, 17] );
echo "\nSum of the numbers of the said array except those numbers starting with 5 followed by atleast one 6:\n". test([1, 5, 6, 9, 10, 17] );
echo "\nSum of the numbers of the said array except those numbers starting with 5 followed by atleast one 6:\n". test([5, 6, 7, 9, 10, 17, 1] );
echo "\nSum of the numbers of the said array except those numbers starting with 5 followed by atleast one 6:\n". test([11, 9, 10, 17, 5, 6] );

Sample Output:

Sum of the numbers of the said array except those numbers starting with 5 followed by atleast one 6:
49
Sum of the numbers of the said array except those numbers starting with 5 followed by atleast one 6:
37
Sum of the numbers of the said array except those numbers starting with 5 followed by atleast one 6:
44
Sum of the numbers of the said array except those numbers starting with 5 followed by atleast one 6:
47

Flowchart:

Flowchart: Compute the sum of the numbers in a given array except those numbers starting with 5 followed by atleast one 6.

PHP Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a PHP program to compute the sum of values in a given array of integers except the number 17. Return 0 if the given array has no integer.
Next: Write a PHP program to check if a given array of integers contains 5 next to a 5 somewhere.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



PHP: Tips of the Day

How to Sort Multi-dimensional Array by Value?

Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:

Example:

function sortByOrder($a, $b) {
    return $a['order'] - $b['order'];
}

usort($myArray, 'sortByOrder');

Starting in PHP 5.3, you can use an anonymous function:

usort($myArray, function($a, $b) {
    return $a['order'] - $b['order'];
});

And finally with PHP 7 you can use the spaceship operator:

usort($myArray, function($a, $b) {
    return $a['order'] <=> $b['order'];
});

To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.

usort($myArray, function($a, $b) {
    $retval = $a['order'] <=> $b['order'];
    if ($retval == 0) {
        $retval = $a['suborder'] <=> $b['suborder'];
        if ($retval == 0) {
            $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder'];
        }
    }
    return $retval;
});

If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual

Ref : https://bit.ly/3i77vCC