Explain how the algorithm has time complexity O(1) in terms of the number of comparisons used. Please explain in detail how to solve this problem. I really want to understand how this works. If possible please type up the steps.

(a) We name the algorithm "sort first four" and the input is a list of real numbers contains at least 1 numbe procedure sort first four (a1,a2,,an : real numbers with n2) We will compare the second element with the first, then the third with the first two and finally the forth with the first three. for i:=2 to min(4,n) for j=1 to i1 We search the place where the i th element should be inserted and then insert the i th element accordingly if ai