Sorting an array in AWK

sort.awk

#!/usr/bin/awk -f

BEGIN {
    i = 0
}

{
    numbers[i++] = $1
}

END {
    n = asort(numbers)
    # After the call to asort(), numbers is indexed from 1 to n
    for (i = 1; i <= n; i++) {
        print numbers[i]
    }
    # Alternatively, we can write:
    # for (i in numbers) print numbers[i]
    print "Minimum:", numbers[1]
    print "Maximum:", numbers[n]
    print "Median:",  n % 2 == 1 ? numbers[int(n/2)+1] \
                                 : (numbers[int(n/2)] + numbers[int(n/2)+1]) / 2
}