Design a program to process a seqeunce of non-negative integers, terminated by a single negative value and output the smallest and largest value in the sequence.
Even though this problem is in the loops section, it doesn't need a loop to work out the smallest and largest values because PHP has some excellent array functions.
<? // generate a random number of random numbers for ($n = 0; $n < mt_rand(5, 20); $n++) $sequence[] = mt_rand(1, 50); // add the terminator $sequence[] = -1; // show the sequence echo 'Sequence: ' . implode(', ', $sequence) . '<br/>'; // sort the sequence of numbers sort($sequence); // show the smallest and largest echo 'Smallest: ' . $sequence[1] . '<br/>Largest: ' . array_pop($sequence); ?>Which produces:
Sequence: 29, 40, 40, 1, 20, 37, -1
Smallest: 1
Largest: 40