How to determine if a set of numbers is unique?

[Jack Hoffnung]

I am generating a set of 16 bytes "randomly" and want to determine if all are unique values. Anyone know of a simple way to do this?

[Anobium]

Jack,

What is the range? and, is Zero a valid random number?

Create an array with 16 elements,
Set all 16 elements to zero, (I am assuming zero is not a valid random number)
Generate a random number check that it does not exist in the array, if unique - put into element 1
Repeat above put valid result into the next available element that is zero, stopping after the 16th element is not zero.

[Jack Hoffnung]

Thanks so much; this is the help I needed.

[stan cartwright]

Do you mean 16 byte numbers that are all different? unique meaning.

dim nums(16) as byte
for c1=1 to 16
nums(c1)=random
next

gcb would not repeat a number in 16 array. It would be the same numbers every time... from gcb help.
;----------------------------------------------
Random
Syntax:

var = Random

Command Availability:

Available on all microcontrollers

Explanation:

The Random function will generate a pseudo-random number between 0 and 255 inclusive.

The numbers generated by Random will follow the same sequence every time, until Randomize is used.

Example:

'Set chip model
#chip tiny2313, 1

'Use randomize, with the value on PORTD as the seed
Randomize PORTD

'Generate random numbers, and output on PORTB
Do
    PORTB = Random
    Wait 1 s
Loop

[Anobium]

That is true Stan. For a given RANDOMISE instruction the next 16 RANDOMs would be different.

[Jack Hoffnung]

Thanks Stan and Anobium; this information will be very helpful with my project!

[stan cartwright]

@JackHoffnung ... An array of 16 different numbers is a challenge. if you use a port like a-d to use the noise for a truly random value.
The 16 different numbers 1 to 255 is my latest challenge. It's not as easy as you think but could be done efficiently.