ches successive pairs of numbers starting at the bottom of the stack. For example, if the stack initially stores these values: bottom [3, 8, 17, 9, 1, 10] top Your function should switch the first pair (3, 8), the second pair (17, 9), ...: bottom [8, 3, 9, 17, 10, 1] top if there are an odd number of values in the stack, the value at the top of the stack is not moved: For example: bottom [3, 8, 17, 9, 1] top It would again switch pairs of values, but the value at the top of the stack (1) would not be moved bottom [8, 3, 9, 17, 1] top Note: There are 2 solutions:

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter18: Stacks And Queues
Section: Chapter Questions
Problem 21SA
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Given a stack, switch_pairs function takes a stack as a parameter and that
switches successive pairs of numbers starting at the bottom of the stack.
For example, if the stack initially stores these values:
bottom [3, 8, 17, 9, 1, 10] top
Your function should switch the first pair (3, 8),
the second pair (17, 9), ...:
bottom [8, 3, 9, 17, 10, 1] top
if there are an odd number of values in the stack, the value at the top of the
stack is not moved: For example:
bottom [3, 8, 17, 9, 1] top
It would again switch pairs of values, but the value at the
top of the stack (1)
would not be moved
bottom [8, 3, 9, 17, 1] top
Note: There are 2 solutions:
first_switch_pairs: it uses a single stack as auxiliary storage
second_switch_pairs: it uses a single queue as auxiliary storage
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