function bubbleSort(arr){ let len = arr.length; let cost = 0; for(let i=0; i<len; i++){ for(let j=0; j<len-1; j++){ if(arr[j] > arr[j+1]){ swap(arr, j, j+1); } } } return arr } let unsortedArr = [0, 5, 6, 8, 2, 1, 3, 7, 4, 10, 12, 11] console.log(bubbleSort(unsortedArr))