Question

How to fill a matrix with 1 and 0 in random locations with PHP

Answer 1

define('ROWS', 5);
define('COLS', 4);

function fillMatrixWithRandom0and1(&$matrix, $rows, $cols) {
    // Seed the random number generator
    srand(time());

    // Resize the matrix to $rows x $cols
    $matrix = array_fill(0, $rows, array_fill(0, $cols, 0));

    // Fill the matrix with random 0s and 1s
    for ($i = 0; $i < $rows; ++$i) {
        for ($j = 0; $j < $cols; ++$j) {
            $matrix[$i][$j] = rand(0, 1); // Generates either 0 or 1
        }
    }
}

$matrix = [];

fillMatrixWithRandom0and1($matrix, ROWS, COLS);

foreach ($matrix as $row) {
    foreach ($row as $val) {
        echo $val . " ";
    }
    echo PHP_EOL;
}



/*
run:

0 0 0 1 
1 1 1 0 
1 1 0 0 
0 1 0 1 
1 1 0 1

*/

 

70+ SQL courses for beginners and professionals