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

Last update on May 28 2025 13:07:43 (UTC/GMT +8 hours)

49. Same Rightmost Digit Among Integers

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:

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

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to test if two or more non-negative integers share the same last digit using modulo operations.
Write a PHP function to iterate through a variable list of numbers and check if they all end with the same digit.
Write a PHP program to extract the last digit of each number in an array and compare them for uniformity.
Write a PHP script to implement a comparison that returns true only if every integer in a given list has the same units place digit.

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