Reverse an Array Using Only Pointers

Code

#include <stdio.h>

void reverse_array(int *ptr, int n) {
    // Your logic here
    int mem[n];
    int idx = 0;
    for(int i = n - 1; i >= 0; i--)
    {
        mem[idx++] = *(ptr+i);
    }

    for(int i = 0; i < n; i++)
    {
        *(ptr+i) = *(mem+i);
    }
}

int main() {
    int n;
    scanf("%d", &n);

    int arr[100];
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }

    reverse_array(arr, n);

    for (int i = 0; i < n; i++) {
        printf("%d", arr[i]);
        if(i < n-1){
            printf(" ");
        }
    }

    return 0;
}

Solving Approach