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

Last update on April 16 2025 12:55:49 (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:

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.

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.
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