import java.util.Scanner;
class Test {
    public static void main(String[] args){
        Scanner a=new Scanner(System.in);
        System.out.print("enter length of array ");
        int len=a.nextInt();
        int i;
        int[] arr=new int[len];
        for(i=0;i<arr.length;i++){
            arr[i]=a.nextInt();
        }
        int max=arr[0];
        for(i=1;i<arr.length;i++){
            if(max<arr[i]){
                max=arr[i];
            }
        }
        System.out.println("max is "+max);
    }
}

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-3
1
2
3