Reverse an Array In-Place

Code

#include <stdio.h>

void swap(int* a, int* b){
    int temp = *a;
    *a = *b ;
    *b = temp ;
}

void reverse_array(int arr[], int n) {
    // Your logic here
    int* ptr1 = arr ;
    int* ptr2 = arr + n - 1 ;

    for (int i = 0; i < (n/2); i++){
        swap(ptr1, ptr2) ;
        ptr1++ ;
        ptr2-- ;
    }
}

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