Flowchart

TUGAS ALGORITMA PERSEGI PANJANG

/*
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* and open the template in the editor.
*/

package Igarah;

import java.util.Scanner;

/**
*
* @author ASUS
*/
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
    int p ;
    int l ;
    int h ;
    int k ;
        System.out.println("\n Masukkan Panjang = ");
        Scanner input = new Scanner (System.in) ;
        p = input.nextInt();

        System.out.println("\n Masukkan Lebar = ");
        Scanner in = new Scanner (System.in);
        l = input.nextInt();

        h = p*l ;
        System.out.println("Hasil dari Luas =" +h);

        k = 2*p + 2*l ;
        System.out.println("Hasil dari Keliling =" +k);
    }

}

TUGASALGORITMA PERSEGI

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package Igarah;

import java.util.Scanner;

/**
*
* @author ASUS
*/
public class luas_bujursangkar {

    public static void main(String[] args) {
        int s ;
        int h ;
        int k ;
        System.out.println("\n Masukkan sisi = ");
        Scanner input = new Scanner (System.in);
        s = input.nextInt() ;

        h = s * s ;
        System.out.println("Luas ="+h);

        k = 4 * s ;
        System.out.println("Keliling ="+k);

    }

}

TUGAS ALGORITMA NILAI

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package Igarah;

import java.util.Scanner;

/**
*
* @author ASUS
*/
public class nilai {
public static void main(String[] args) {
int n ;
System.out.println("\n Masukkan Nilai = ");
Scanner input = new Scanner (System.in) ;
n = input.nextInt();

if (n>=0 && n<=40)
System.out.println("E");

if (n>=41 && n<=50)
System.out.println("D");

if (n>=51 && n<=60)
System.out.println("C");

if (n>=61 && n<=70)
System.out.println("B");

if (n>=71 && n<=100)
System.out.println("A");

if (n>100)
System.out.println("Eror");
}
}

BILANGAN PRIMA

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package Igarah;

import java.util.Scanner;

/**
*
* @author ASUS
*/
public class Bilangan_prima {
public static void main(String[] args) {

int n;
System.out.println("\n Masukkan Angka yang akan diuji = ");
Scanner input = new Scanner (System.in) ;
n = input.nextInt();

boolean isPrime = false;
if (n >= 2) {
isPrime = true;
for (int x = 2; x < n; x++) {
if (n % x == 0) {

isPrime = false;

}
}
}
System.out.println("the answer is " + isPrime);
}
}