Example Code Ch 13-6
Assume a stack class stores int values. Consider the following sequence of instructions.
Stack s = new Stack();
s.push(16);
s.push(12);
s.push(19);
int x = s.pop();
s.push(5);
s.push(9);
s.push(4);
int y = s.pop();
int z = s.pop();
-Refer to Example Code Ch 13-6: After the instructions execute, z has the value
A) 4
B) 9
C) 5
D) 12
E) 16

Question

Quizplus · Accepted Answer

The sequence of instructions creates a new stack object, adds the values 16, 12, and 19 to the stack, and then removes the top value (19) and assigns it to the variable x. The next three values added to the stack are 5, 9, and 4 (in that order). The next two values removed from the stack are y (which will be the top value, 4) and z (which will be the second value in the stack, 9). Therefore, z has a value of 9.