Exponet

import java.util.Scanner;

public class multipied {
    public static Scanner scanner = new Scanner (System.in);
    public static void main(String[] args) {
        System.out.println("Enter int");
        int n = scanner.nextInt();
        int sum = 1;
        System.out.println("For loop");
        for(int i = 0 ; i < n ; ++i ){
            if(n == 0){
                System.out.println(sum+'\n');
                break;
            }
            sum*=2;
        }

        if (n >= 31){
            System.out.println(sum-1);
            int r = multipied(n);
            System.out.println("\nRecursive");
            System.out.println(r-1);
        }else{
            System.out.println(sum);
            int r = multipied(n);
            System.out.println("\nRecursive");
            System.out.println(r);
        }



    }

    public static  int multipied(int n){
        int ans;
        if(n == 0)
            return 1;
        else if(n%2 == 0){
            int k = multipied(n/2);
            ans = k*k;
        }
        ans= 2 * multipied(n-1);

        return ans ;
    }

}

Exponet

public class Recursion {
    public static void main(String[] args) {
        int[] arr = {23,21,321,312,31,23,12,312,312,312,3,18,200000,1};
        int arrSum = 0;
        arrSum= sigma(arr,arr.length-1);

        int sum;
        sum = sigma(arr.length);
        System.out.println("Sum of Array Elements:");
        System.out.println(arrSum+"\n");
        System.out.println("sigma n ==> (Arr.length) \n"+arr.length+"\n"+ sum);
    }


    public static int sigma(int n){
        if(n<=0)
            return n;

        return n + sigma(n-1);


    }

    public static int sigma(int[] arr, int l){

        if(l == 0)
            return arr[l];

        return arr[(l)] + sigma(arr,l-1) ;
    }
}

Similar codes

0 vote209 views1 answer
Electron driver window maximize selenium webdriver
Java
1 vote214 views1 answer
Long vs int java
Java
0 vote203 views1 answer
Cask 'java' is unreadable: undefined method `release' for OS::Mac:Modul
Java
0 vote202 views1 answer
Get executable path java
Java
3 votes182 views1 answer
Ternary operator java
Java
0 vote189 views2 answers
Program type already present: android.support.v4.app.INotificationSideChannel
Java
0 vote265 views1 answer
Share Icon/Button
Java
1 vote198 views1 answer
Wat is voorbereiden voltooid deelwoord
Java
2 votes240 views2 answers
Spring boot connect to xampp mysql
Java
0 vote188 views1 answer
Where to check when you hava a error
Java