a. (15 points) Describe an algorithm (in pseudo-code) that finds the sum of the integers that are greater than -10 and less than 20 in a list (the list may contain integers in the desired interval and others that are not in the interval) . Your input is a list of integers a₁,a₂, ,,,,a_n . If your list does not contain any integers in the specified interval then you should return an error message.

If the input list is 4,12, 30, your must return 4+12 and if the list is -15, 30, 32, you must return 'not found'.

b. (5 points) How may operations (arithmetic or logical comparison) are performed in your algorithm?