PHP Exercises: Test if a given non-negative number is a multiple of 13 or it is one more than a multiple of 13

PHP Basic Algorithm: Exercise-41 with Solution

Write a PHP program to test if a given non-negative number is a multiple of 13 or it is one more than a multiple of 13.

Sample Solution:

PHP Code :

<?php
// Define a function that checks if a number satisfies a certain condition related to modulo 13
function test($n)
{
    // Check if the remainder of $n divided by 13 is 0 or 1
    return $n % 13 == 0 || $n % 13 == 1;
}

// Test the function with different values
var_dump(test(13));
var_dump(test(14));
var_dump(test(27));
var_dump(test(41));
?>

Explanation:

• Function Definition:
• The test function checks whether a number $n meets a specific condition involving the modulo operation with 13.
• Condition Checked:
• The function checks if $n is either:
• Divisible by 13 ($n % 13 == 0), or
• Leaves a remainder of 1 when divided by 13 ($n % 13 == 1).
• If either condition is met, it returns true; otherwise, it returns false.

Output:

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

Flowchart:

PHP Code Editor:

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