java代码输出偶数 java求偶数和代码

用JAVA编写程序:输入20个整数存入数组中,输出其中的偶数及偶数之和

public static void main(String[] args) {

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int array[] = new int[20];

int result = 0;

ListInteger list = new ArrayListInteger();

System.out.println("请输入20个整数:");

Scanner sc = new Scanner(System.in);

for (int i = 0; i 20; i++) {

array[i] = sc.nextInt();

if(array[i] % 2 == 0) {

list.add(array[i]);

result += array[i];

}

}

System.out.println("偶数为:");

for (int i = 0; i list.size(); i++) {

System.out.println(list.get(i));

}

System.out.println("偶数和为:" + result);

}

Java怎么编程输出1-100间的偶数?

for(int i=0;i;i+){

if(i%2=0){

System.out.println(i);}

}

一、按钮“求2到100之间的偶数和”代码如下:

Private Sub Command1_Click()Dim i As IntegerDim s As Integers = 0For i = 2 To 100 Step 2 s = s + iNext iPrint "2到100的所有偶数和是:"; sEnd Sub

二、按钮“方法2”代码如下:

Private Sub Command2_Click()Dim i As IntegerDim s As Integers = 0For i = 2 To 100If i Mod 2 = 0 Then s = s + iEnd IfNext iPrint "2到100的所有偶数和是:"; sEnd Sub

三、按钮“方法3”代码如下:

Private Sub Command3_Click()Dim i As IntegerDim s As Integers = 0i = 2DoIf i Mod 2 = 0 Then s = s + iEnd Ifi = i + 1Loop Until i 100Print "2到100的所有偶数和是:"; sEnd Sub

四、按钮“方法4”代码如下:

Private Sub Command4_Click()Dim i As IntegerDim s As Integers = 0i = 2Dos = s + ii = i + 2Loop Until i 100Print "2到100的所有偶数和是:"; sEnd SubPrivate Sub Command2_Click()Dim i, sum1, sum2 As Integersum1 = 0sum2 = 0For i = 1 To 100If i Mod 2 = 1 Thensum1 = sum1 + iElsesum2 = sum2 + iEnd IfNext iPrint "奇数和为" sum1Print "偶数和为" sum2End Sub

java循环语句输出0到40的偶数并用正方形输出

你所说的正方形输出是指矩形输出吧,下面是完整代码:

public  class  Output

{

public static void main(String []args)//主方法

{

int i;

int count=0;

for(i=0;i=40;i+=2)  

{

count++;

System.out.printf("%-4d",i); 

if(count%7==0)   //每行显示7个偶数

{System.out.println();}

}

}

}

运行结果图:

JAVA编写程序,输出100到1000间的所有偶数,并要求每行输出“10个数字

public class Test {

public static void main(String[] args) {

int count = 0;

for (int i = 100; i = 1000; i++) {

if (i % 2 == 0) {

System.out.print(i + " ");

if (++count % 10 == 0) {

System.out.print("\n");

}

}

}

}

}


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