Reverse an Array In-Place

Code

#include <stdio.h>

void swap(int arr[], int posA, int posB) {
    int temp = arr[posA];
    arr[posA] = arr[posB];
    arr[posB] = temp;
}
void reverse_array(int arr[], int n) {
    // Your logic here
    for (int i = 0; i < (n / 2); i++) {
        swap(arr, i, n - i - 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