Reversing the elements of an array involves swapping the corresponding elements

Question

Reversing the elements of an array involves swapping     the corresponding elements of the array: the first with     the last, the second with the next to the last, and so on,     all the way to the middle of the array.

    Given an array a, an     int variable     n containing the number of     elements in a, and two other     int variables,     k and     temp,     write a loop that reverses the     elements of the array.

    Do not use any other variables besides     a,     n,     k, and     temp.

Explanation / Answer

Loop that reverses the contents of array is as follows:

Given:

a is an array;

n is numberr of elements

k is first element index, temp is the last element index;

______________________________________________________

while(k<n/2)

{

a[k]=a[k]+a[temp];

a[temp]=a[k]-a[temp];

a[k]=a[k]-a[temp];

k++;

temp--;

}

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