Code in (Java)
                    
                    
                        // Java code for linearly searching x in arr[]. If x
// is present then return its location, otherwise
// return -1 
class GFG {
public static int search(int arr[], int x) 
{
    int N = arr.length;
    for (int i = 0; i < N; i++) {
        if (arr[i] == x)
            return i;
    }
    return -1;
}
// Driver's code
public static void main(String args[])
{
    int arr[] = { 2, 3, 4, 10, 40 };
    int x = 10;
    // Function call
    int result = search(arr, x);
    if (result == -1)
        System.out.print(
            "Element is not present in array");
    else
        System.out.print("Element is present at index "
                        + result);
}
}