PHP Exercises: Find heights of the top three building in descending order from eight given buildings

PHP: Exercise-46 with Solution

Write a PHP program to find heights of the top three building in descending order from eight given buildings.

Input:
0 ≤ height of building (integer) ≤ 10,000

Pictorial Presentation:

Sample Solution:

PHP Code:

<?php
// Create an empty array to store building heights
$heights = array();

// Read input from STDIN until end-of-file
while ($line = fgets(STDIN)) {
    // Remove newline characters and convert to integer, then push to the heights array
    rtrim($line, "\n");
    array_push($heights, (int)$line);
}

// Sort the heights array in descending order
rsort($heights);

// Print the top three building heights
print("Heights of the top three buildings:\n");
echo $heights[0]."\n"; // Print the height of the tallest building
echo $heights[1]."\n"; // Print the height of the second tallest building
echo $heights[2]."\n"; // Print the height of the third tallest building

?>

Sample Output:

Heights of the top three buildings:
45
25
24

Flowchart:

PHP Code Editor:

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