150) A sorting technique that guarantees that records with the same primary key occurs in the same order in the sorted list as in the original unsorted list is said to be

151) The way a card game player arranges his cards as he picks them up one by one, is an example of

152) You want to check whether a given set of items is sorted. Which of the following sorting methods will be most efficient if it is already in sorted order

153) The average number of comparisons performed by the merge sort algorithm, in merging two sorted liss of length 2 is

154) Which of the following sorting methods will be the best if number of swappings done, is the only measure of efficiency