How do i know the time and space complexity of my Algolithm

Question

for example i tried to create what is called bubble sort by my own in Javascript
so can i say my time complexity O(N) and O(N^2) for best and worst respectively?

let arr = [9,8,7,6,5,4,3,2,1];

;(function MyBubbleSort(nums) {

for (var i = 0; i < nums.length; i++) {

if (i > 0 && nums[i] < nums[i-1]) {
let temp = nums[i-1]
nums[i-1] = nums[i]
nums[i]= temp
i=-1
}else continue;

}
return nums
}(arr));

Answer 1

Dagota ,

here is a link to some useful information about your requested items that may help:

https://www.geeksforgeeks.org/time-complexity-and-space-complexity/

Answer 2

You can measure the duration and thus judge which algorithm would be better where.