PHP Exercises: Check three given integers and return true if one of them is 20 or more less than one of the others

Last update on May 28 2025 13:05:11 (UTC/GMT +8 hours)

50. Check if One Integer is 20 or More Less Than Another

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.

Sample Solution:

PHP Code :

<?php
// Define a function that checks if the absolute difference between two numbers is greater than or equal to 20
function test($x, $y, $z)
{
    // Check if the absolute difference between $x and $y is greater than or equal to 20,
    // or if the absolute difference between $x and $z is greater than or equal to 20,
    // or if the absolute difference between $y and $z is greater than or equal to 20
    return abs($x - $y) >= 20 || abs($x - $z) >= 20 || abs($y - $z) >= 20;
}

// 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(10, 20, 15))."\n";
?>

Explanation:

Function Definition:

The function test checks if the absolute difference between any two of the three numbers $x, $y, or $z is greater than or equal to 20.

Condition Checked:

The function calculates the absolute difference between:

$x and $y
$x and $z
$y and $z

It then checks if any of these differences are >= 20.

Output:

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

Visual Presentation:

PHP Basic Algorithm Exercises: Check three given integers and return true if one of them is 20 or more less than one of the others.

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to check among three integers if one is at least 20 less than any other, returning a boolean result.
Write a PHP function to compare three numbers and determine if the difference between any two meets or exceeds 20.
Write a PHP program to validate three integers and use absolute differences to check if one is substantially smaller by at least 20.
Write a PHP script to implement a set of conditional checks among three integers to decide if one value is at least 20 lower than another.

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