sort very easy

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#include <stdio.h>
#define SIZE 10

int main()
{
    int i,j, temp,arr[SIZE]={2,7,8,1,4,3,6,9,10,5};

     printf("ARRAY BEFORE SORTING:\n");
    for(i=0;i<SIZE;i++)//print an array
        printf("%d\t",arr[i]);
        printf("\n");


    for(i=0;i<SIZE;i+=2)//sort array of elements i = 0, 2, 4, 6, 8
    {

        for(j=i+2;j<SIZE;j+=2)
        {
            if(arr[i]<arr[j])//noneven
            {

                temp = arr[i];
                arr[i] = arr[j];
                arr[j]= temp;
            }
        }
    }

    for(i=1;i<SIZE;i+=2)//sort array of elements i=1, 3, 5, 7
    {

        for(j=i+2;j<SIZE;j+=2)
        {
            if(arr[i]>arr[j])//noneven
            {

                temp = arr[i];
                arr[i] = arr[j];
                arr[j]= temp;
            }
        }
    }

    printf("ARRAY AFTER SORTING:\n");
    for(i=0;i<SIZE;i++)//print an array
        printf("%d\t",arr[i]);
        printf("\n");


    return 0;
}