var bubble = function(nums){ var temp; for (var i = 0; i < nums.length; i++) { for (var j = 0; j < (nums.length-i-1); j++) { if (nums[j] > nums[j+1] ){ temp = nums[j]; nums[j] = nums[j+1]; nums[j+1] = temp; } } console.log(nums[i]); } }; bubble([12, 2,3, 4, 10]);