*Design a program to process a sequence 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: 12, 8, 46, 6, 29, 46, 5, -1

Smallest: 5

Largest: 46

- May 1, 2005 - Added solution 1.

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