Maximize Sum Of Arr[i]*i Of An Array

code.java

import java.util.*;

public class Main {

    public static int maximise(int[]arr) {
        //write your code here
        Arrays.sort(arr);

        int ans = 0;
        
        for(int i=0; i < arr.length;i++) {
            ans  += arr[i]*i;
        }
        
        return ans;
    }

    public static void main(String[]args) {
        //input work
        Scanner scn = new Scanner(System.in);
        int n = scn.nextInt();

        int[]arr = new int[n];
        for(int i = 0 ; i < n; i++) {
            arr[i] = scn.nextInt();
        }

        int ans = maximise(arr);
        System.out.println(ans);
    }
}
                                

snippet.java

import java.util.*;

public class Main {

    public static int maximise(int[]arr) {
        //write your code here
        return 0;
    }

    public static void main(String[]args) {
        //input work
        Scanner scn = new Scanner(System.in);
        int n = scn.nextInt();

        int[]arr = new int[n];
        for(int i = 0 ; i < n; i++) {
            arr[i] = scn.nextInt();
        }

        int ans = maximise(arr);
        System.out.println(ans);
    }
}