COMPUTERS AND TECHNOLOGY HIGH SCHOOL

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 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, k, and temp.

Answers

Answer 1

Answer:

Answer:

// Assume that all variables a, n, temp have been declared.

// Where a is the array, n is the array length, temp is a temporary

// storage location.

// Cycle through the array a.

// By the time the loop gets halfway,

// The array would have been reversed.

// The loop needs not get to the end of the array.

// Hence, the loop ends halfway into the array i.e n/2.

for (int k = 0; k < n / 2; k++) {

// Swap first and last, second and next-to-the-last and so on

temp = a[k];

a[k] = a[n - k - 1];

a[n - k - 1] = temp;

}

Explanation:

Carefully go through the comments in the code.

Hope this helps!

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