Array program

Array task :
1)Replace the value in an array

{

    int arr[]= {10,45,30,40};
    Scanner sc=new Scanner(System.in);
    System.out.println("enter user value");
    int user=sc.nextInt();

    Scanner sc1=new Scanner(System.in);
    System.out.println("enter a");
    int a=sc1.nextInt();


    for(int i=0;i<=arr.length-1;i++)
    {
        arr[a]=user;
        System.out.println(arr[i]);

    }
}

2)Find the smallest number in an array

{

public static void main(String[] args) {
    int a[]= {10,45,100,56,35,90};
    int minimum=a[0];
    for(int i=0;i<=a.length-1;i++)
    {
        if(minimum>a[i])
        {
            minimum=a[i];

        }
        System.out.println(minimum);
    }

}

}