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True or False? a. A stack is a first in, first out structure. b. The item that h

ID: 669960 • Letter: T

Question

True or False?

a. A stack is a first in, first out structure.

b. The item that has been in a stack the longest is at the "bottom" of the stack.

c. If you push five items onto an empty stack and the pop the stack five times, the stack will be empty again.

d. If you push five items onto an empty stack and then perform the top operation five times, the stack will be empty again.

e. The push operation should be classified as a "transformer."

f. The top opertaion should be classified as a "transformer."

g. The pop operation should be classified as an "observer."

h. If we first push itemA onto a stack and then push itemB, then the top of the stack is itemB.

Explanation / Answer

a. A stack is a first in, first out structure. False

b. The item that has been in a stack the longest is at the "bottom" of the stack. True

c. If you push five items onto an empty stack and the pop the stack five times, the stack will be empty again. True

d. If you push five items onto an empty stack and then perform the top operation five times, the stack will be empty again. False

e. The push operation should be classified as a "transformer." True

f. The top opertaion should be classified as a "transformer." False

g. The pop operation should be classified as an "observer." True

h. If we first push itemA onto a stack and then push itemB, then the top of the stack is itemB. True

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