const numbers = [99,44, 6,2,1,5,63,87,283,4,0] function InsertionSort(array) { const length = array.length; for(let i=0; i < length; i++) { if(array[i] < array[0]) { //move number to the first position array.unshift(array.splice(i,1)[0]); } else { // find where the number should go for(let j=1; j < i; j++) { if(array[i] > array[j-1] && array[i] < array[j]) { // move to the right spot array.splice(j,0, array.splice(i,1)[0]); } } } } } InsertionSort(numbers); console.log(numbers)