I've been faced with the task of creating a random number generator for selecting lottery numbers. The challenge is to generate 6 unique numbers between 1 and 49, in ascending order, without any repeats. Additionally, there is a 7th number called the super-seven, which cannot be any of the previous 6 numbers.
<script type="text/javascript">
const numb = new Array();
for (var i = 0; i < 6; i++) {
numb[i] = Math.floor(49 * Math.random()) + 1;
// compare to existing numbers
for (var k = 0; k < numb.length - 1; k++) {
if (numb[i] == numb[k]) {
i--;
break;
}
}
}
let supNumb = new Array();
supNumb = Math.floor(49 * Math.random()) + 1;
for (var s = 0; s <= 1; s++) {
// compare supNumb to numb
for (var t = 0; t < numb.length - 1; t++) {
if (supNumb == numb[t]) {
s--;
break;
}
}
}
// SORT & DISPLAY NUMBERS
function sort(a, b) {
return a - b;
}
numb.sort(sort);
document.write("<p> " + numb);
document.write("<h4>" + "SuperSeven: " + supNumb);
</script>
After testing, it seems that the super-seven number supNumb sometimes matches one of the numbers generated in numb. I'm struggling to figure out how to prevent this from happening.
If anyone could review my code and suggest how I can compare supNumb to numb correctly, I would greatly appreciate it.
Is my current approach correct for this task?
Thank you in advance!