How do you reverse an array?
For example:
1 2 3 4 is input.
The output should be 4 3 2 1
First, interchange starting and end number, then increment the starting and decrement the end. For example:
void
rvereseArray(
int
arr[],
int
start,
int
end)
{
   Â
int
temp;
   Â
while
(start < end)
   Â
{
       Â
temp = arr[start];Â Â Â
       Â
arr[start] = arr[end];
       Â
arr[end] = temp;
       Â
start++;
       Â
end--;
   Â
}Â Â Â
}Â Â Â Â Â
Â
Â
Â
void
printArray(
int
arr[],
int
size)
{
 Â
int
i;
 Â
for
(i=0; i < size; i++)
   Â
printf
(
"%d "
, arr[i]);
Â
Â
 Â
printf
(
"\n"
);
}Â
Â
Â
int
main()Â
{
   Â
int
arr[] = {1, 2, 3, 4, 5, 6};
   Â
int
n =
sizeof
(arr) /
sizeof
(arr[0]);Â
   Â
printArray(arr, n);
   Â
rvereseArray(arr, 0, n-1);
   Â
printf
(
"Reversed array is \n"
);
   Â
printArray(arr, n);Â Â Â Â
   Â
return
0;
}
Â
Â
The output will be 6 5 4 3 2 1