C Program to Reverse the Elements in array
Description
Get array size n and n elements of array, then reverse the n elements.
Input:
5
5 7 9 3 1
Output:
1 3 9 7 5
Solution
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
int *a,n,i,j,temp;
printf("Enter size of array:");
scanf("%d",&n);
a=malloc(sizeof(int)*n);
printf("Enter %d Elements:",n);
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
}
for(i=0,j=n-1;i<j;i++,j--)
{
temp=a[i];
a[i]=a[j];
a[j]=temp;
}
printf("\After reversing the array:\n");
for(i=0;i<n;i++)
{
printf("%d ",a[i]);
}
return 0;
}
Explanation
initialize i to first location of array and j to last location of array using
i=0
j=n-1
swap the elements in location i and j, then increment i by 1 and decrement j by 1.
t=a[i]
a[i]=a[j]
a[j]=temp
repeat the above step till i is less than j
Input:
5
Output:
*
**
***
****
*****
****
***
**
*Solution
Input:
5
Output:
*
***
*****
*******
*********
*******
*****
***
*Solution
Input:
5
Output:
* *
** **
*** ***
**** ****
**********Solution
Input:
5
Output:
* *
** **
*** ***
**** ****
*********Solution
Input:
5
Output:
* *
** **
*** ***
**** ****
*********
**** ****
*** ***
** **
* *Solution
Input:
5
Output:
*********
*******
*****
***
*
***
*****
*******
*********Solution