Question: Write a function swapElements ( ) that swaps two adjacent elements of indices ' i ' and ' i + 1 ' of the

Write a function "swapElements()" that swaps two adjacent elements of indices 'i' and 'i+1' of the same vector "vi" that stores integer elements.
void swapElements(vector & vi, int i);
However, for the last element at position i=vi.size()-1, there is no "i+1". So the operation should not be perform and nothing should happen, i.e., the vector remains the same.

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