If a stack contained the entries w,x,y,z (from top to bottom),which of the following would be the contents after two entries were removed and the entry r was inserted?
A) w, x, r
B) y, z, r
C) r, y, z
D) r, w, x

Question

Quizplus · Accepted Answer

Stacks operate on a Last In, First Out (LIFO) principle. Removing two entries from the top (w, x) and then inserting r would leave r at the top, followed by the remaining original entries (y, z).

If a Stack Contained the Entries W,x,y,z (From Top to Bottom),which