PHP Exercises: Compute the maximum value of the sum of the passing integers

PHP: Exercise-76 with Solution

Your task is to develop a small part of spreadsheet software.
Write a PHP program which adds up columns and rows of given table as shown in the following figure:

Pictorial Presentation:

Input: n (the size of row and column of the given table)
1st row of the table
2nd row of the table
:
:
n th row of the table
The input ends with a line consisting of a single 0.

Sample Output:
The maximum value of the sum of integers passing according to the rule on one line.

Sample Solution: -

PHP Code:

<?php
while (($line = trim(fgets(STDIN))) !== '0') {
    $n = (int)$line;
    $arr = array_fill(0, $n + 1, array_fill(0, $n + 1, 0));
    for ($i = 0; $i < $n; $i++) {
        $line = trim(fgets(STDIN));
        foreach (explode(' ', $line) as $j => $m) {
            $m = (int)$m;
            $arr[$i][$j] = $m;
            $arr[$i][$n] += $m;
            $arr[$n][$j] += $m;
        }
    }
    $arr[$n][$n] = array_sum($arr[$n]);
    echo "The table with sum of rows and columns:\n";
 
    for ($i = 0; $i <= $n; $i++) {
        for ($j = 0; $j <= $n; $j++) {
            printf('%5d', $arr[$i][$j]);
        }
        echo PHP_EOL;
    }
}
?>

Sample Input:
4
25 69 51 26
68 35 29 54
54 57 45 63
61 68 47 59
0

Sample Output:

The table with sum of rows and columns:
   25   69   51   26  171
   68   35   29   54  186
   54   57   45   63  219
   61   68   47   59  235
  208  229  172  202  811

Flowchart:

PHP Code Editor:

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