Javascript - Generate Pseudo Random NON REPEATING Array of Numbers
~ 1 min read. Published 09 May 2015I have recently had to have a random non repeating numbers. So I used these 2 methods to first generate the set and then shuffle it.
The example will generate numbers 1..99 in a random order.
function generateNumArr(limit) {
ret = [];
for (var i = 1; i < limit; i++) {
ret.push(i);
}
return ret;
}
function shuffle(array) {
var i = array.length,
j = 0,
temp;
while (i--) {
j = Math.floor(Math.random() * (i+1));
// swap randomly chosen element with current element
temp = array[i];
array[i] = array[j];
array[j] = temp;
}
return array;
}
var ranNums = shuffle(generateNumArr(100));
Please let me know in the comments what you think about this method.