PHP Exercises: Check if y is greater than x, and z is greater than y from three given integers x,y,z

Last update on May 30 2022 11:41:02 (UTC/GMT +8 hours)

PHP Basic Algorithm: Exercise-47 with Solution

Write a PHP program to check if y is greater than x, and z is greater than y from three given integers x,y,z.

Sample Solution:

PHP Code :

<?php
function test($x, $y, $z)
{
   return $x < $y && $y < $z;
}

var_dump(test(1, 2, 3))."\n";
var_dump(test(4, 5, 6))."\n";
var_dump(test(-1, 1, 0))."\n";

Sample Output:

bool(true)
bool(true)
bool(false)

Pictorial Presentation:

PHP Basic Algorithm Exercises: Check if y is greater than x, and z is greater than y from three given integers x,y,z.

Flowchart:

PHP Code Editor:

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Previous: Write a PHP program to check if it is possible to add two integers to get the third integer from three given integers.
Next: Write a PHP program to check if three given numbers are in strict increasing order, such as 4 7 15, or 45, 56, 67, but not 4 ,5, 8 or 6, 6, 8.However,if a fourth parameter is true, equality is allowed, such as 6, 6, 8 or 7, 7, 7.

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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