logo CodeStepByStep logo

switchPairs

Language/Type: C++ Vector collections
Related Links:
Author: Marty Stepp (on 2016/06/16)

Write a function named switchPairs that switches the order of values in a Vector of integers in a pairwise fashion. Your function should accept as a parameter a reference to a Vector of integers and should switch the order of the first two values, then switch the order of the next two, switch the order of the next two, and so on. For example, if the vector initially stores {1, 4, 8, -3, 2, 7}, then your function should switch the first pair, (1 and 4), the second pair (8 and -3) and the third pair (2 and 7) to yield {4, 1, -3, 8, 7, 2}.

If there are an odd number of values in the list, the final element is not moved. For example, if the original list had been {1, 2, 3, 4, 5}, then the result would be {2, 1, 4, 3, 5}.

Type your C++ solution code here:


This is a function problem. Write a C++ function as described. Do not write a complete program; just the function(s) above.

You must log in before you can solve this problem.


Log In

Need help?

If you do not understand how to solve a problem or why your solution doesn't work, please contact your TA or instructor.
If something seems wrong with the site (errors, slow performance, incorrect problems/tests, etc.), please

Is there a problem? Contact a site administrator.

© Marty Stepp, all rights reserved.