Reverse an Array Using Only Pointers

Code

#include <stdio.h>

void reverse_array(int *ptr, int n) {
    // Your logic here
    if (n < 1) {
        return;
    }

    int *l = ptr;
    int *r = ptr + n - 1;

    while (l < r) {
        int tmp = *l;
        *l = *r;
        *r = tmp;
        r = r - 1;
        l = l + 1;
    }
}

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