1.bilangan genap/ bilangan ganjil
import java.io.*;
class latihan
{
public static void main(String[] args) throws Exception
{
DataInputStream in = new DataInputStream(System.in);
System.out.println("masukkan bilangan : ");
int a =Integer.parseInt(in.readLine());
if(a%2 ==0) System.out.println("bilangan genap");
else System.out.println ("bilangan ganjil");
}
}
2.bintang bentuk segitiga
import java.io.*;
class segitiga
{
public static void main(String[] args) throws Exception {
int i;
int j;
DataInputStream in = new DataInputStream(System.in);
System.out.print("masukkanlah : ");
int a = Integer.parseInt(in.readLine());
for (i=1;i<=a ;i++ ) {
for (j=1;j<=i ;j++ ) {
System.out.print("*");
}
System.out.println("");
}
}
}
3.rangkap
import java.io.*;
class rangkap
{
public static void main(String[] args) throws Exception
{
int x=2;
int tx=2;
int i;
DataInputStream in = new DataInputStream(System.in);
System.out.print("masukkanlah : ");
int a = Integer.parseInt(in.readLine());
if ((a-1)<10)
{
System.out.print(x);
for (i=1;i<=a-1 ;i++ )
{
x = x + 2;
tx = tx+x;
System.out.print("+"+x);
}
System.out.print("= "+tx);
}
}
}
4.bilangan terkecil
import java.io.*;
class irfan {
public static void main(String[] args) throws Exception {
DataInputStream in=new DataInputStream(System.in);
int [] bilangan;
bilangan = new int[3];
int i;
for (i=0; i<=2; i++){
System.out.print("bilangan-"+(i+1)+" = ");
int a=Integer.parseInt(in.readLine());
bilangan [i]=a ;
}
if (bilangan[0]<bilangan[1]) {
if(bilangan[0]<bilangan[2]){
System.out.print("bilangan terkecil adalah "+bilangan[0]);
}
}
if (bilangan[1]<bilangan[2]) {
if(bilangan[1]<bilangan[0]){
System.out.print("bilangan terkecil adalah "+bilangan[1]);
}
}
if (bilangan[2]<bilangan[0]) {
if(bilangan[2]<bilangan[1]){
System.out.print("bilangan terkecil adalah "+bilangan[2]);
}
}
}
}
ok selamat belajar ya... semangat terus!!!! semoga uts pertama ini nilai kita bagus..AMIN!!!!!
