Help in random function

i want to make random number between 1 to 10
without repate numbet twice or more

i use this function to make random

function getRandomNumber(min:Number, max:Number):Number
{
var randomNumber:Number = Math.round(Math.random() * (max - min) + min);
return randomNumber;
}

getRandomNumber(1, 10);

please help
thank you