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
// Define a function that checks if the last digit of $x, $y, or $z is the same
function test($x, $y, $z)
{
    // Check if the last digit of $x is equal to the last digit of $y or $z,
    // or if the last digit of $y is equal to the last digit of $z
    return $x % 10 == $y % 10 || $x % 10 == $z % 10 || $y % 10 == $z % 10;
}

// Test the function with different sets of numbers
var_dump(test(11, 21, 31))."\n";
var_dump(test(11, 22, 31))."\n";
var_dump(test(11, 22, 33))."\n";
?>

Explanation:

• Function Definition:
• The function test checks if any two of the numbers $x, $y, or $z have the same last digit.
• Condition Checked:
• The function calculates the last digit of each number using the modulo operation (% 10).
• It then checks:
• If the last digit of $x is equal to the last digit of $y or $z.
• Or if the last digit of $y is equal to the last digit of $z.

Output:

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

Visual Presentation:

Flowchart:

PHP Code Editor:

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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.