Using array = [1 2 3 4; 2 4 6 8; 1 3 5 7] Using a for loop, add all of the numbers in each row. Note that when your index is an array, the for loop evaluates one column at a time. Display the sum of each row. Compare this to the value obtained using the sum command Using a while loop, add all of the numbers in the array. Note that you may convert the array into a vector (this allows you to evaluate one element at a time). Display the total sum. Compare this to the value obtained using the nested sum command