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PHP Exercises: Check if two or more non-negative given integers have the same rightmost digit

PHP Basic Algorithm: Exercise-49 with Solution

Write a PHP program to check if two or more non-negative given integers have the same rightmost digit.

Sample Solution:

PHP Code :

<?php
function test($x, $y, $z)
{
    return $x % 10 == $y % 10 || $x % 10 == $z % 10 || $y % 10 == $z % 10;
}

var_dump(test(11, 21, 31))."\n";
var_dump(test(11, 22, 31))."\n";
var_dump(test(11, 22, 33))."\n";

Sample Output:

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

Pictorial Presentation:

PHP Basic Algorithm Exercises: Check if two or more non-negative given integers have the same rightmost digit.

Flowchart:

Flowchart: Check if two or more non-negative given integers have the same rightmost digit.

PHP Code Editor:

Contribute your code and comments through Disqus.

Previous: 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.
Next: Write a PHP program to check three given integers and return true if one of them is 20 or more less than one of the others.

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