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Reverse an Array In-Place

Code

#include <stdio.h>

void reverse_array(int arr[], int n)
 {
    int i;
    for(i=n-1;i>=0;i--)
    {
       printf("%d ",arr[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

 

 

 

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Input

5 1 2 3 4 5

Expected Output

5 4 3 2 1