Question

java 编写一个简单程序

有10个数；判断里面配偶数有多少个，奇数有多少个。10个数随便。

Answer 1

import java.util.Scanner;
public class test{
public static void main(String args[]){
int jishu=0;
int oushu=0;
Scanner scanner=new Scanner(System.in);
Integer []num=new Integer[10];
System.out.println("请输入10个数字");
for(int i=0;i<num.length;i++){
num[i]=scanner.nextInt();
}
for(int i=0;i<num.length;i++){
if(num[i]%2!=0){
jishu++
}else if(num[i]%2==0){
oushu++;
}
}
System.out.println("奇数"+jishu+"个偶数:"+oushu+"个");
}
}

Answer 2

int i = 1;
int oushu_geshu=0;
int jishu_geshu=0;
Scanner ss = new Scanner(System.in);
List zongshu = new ArrayList();
List oushu = new ArrayList();
List jishu = new ArrayList();
while(i<=10){
System.out.println("请输入第"+i+"个数");
int shu = ss.nextInt();
zongshu.add(shu);
if(shu%2==0){
oushu_geshu++;
oushu.add(shu);
}else{
jishu_geshu++;
jishu.add(shu);
}
i++;
}

for (int j = 0; j < zongshu.size(); j++) {
System.out.print("总数字是"+zongshu.get(j)+" ");
System.out.println();
}

for (int j = 0; j < oushu.size(); j++) {
System.out.print("偶数是"+oushu.get(j)+" ");
System.out.println();
}

for (int j = 0; j < jishu.size(); j++) {
System.out.print("奇数是"+jishu.get(j)+" ");
System.out.println();
}

Answer 3

class Test
{
public static void main(String args[])
{
int a[10]={1,3,4,10,11,7,8 5,9,10};
int odd=0;int even=0;
for(int i=0;i<10;++i)
{
if(a[i]%2==0)
{
even++;
}
else
{
odd++;
}
}
System.out.println("偶数："+even+“个，奇数："+odd+"个");
}
}

Answer 4

public class Text{
public static void main(String args[]) throws IOException{
int array=new Array[10];
array[]={}//自己给数组赋值
int a=0;
int b=0;
for(int i=0;i<array.size();i++){
if(array[i]%2==0)
a++;
else
b++;
}
System.out.println("偶数个数："+a+"奇数个数："+b);
}
}

Answer 5

我给你现写了 不明白的可以追问 谢谢
public class T {

public static void main(String[] args) {
int[] a = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
int[] b = new int[5];
int[] c = new int[5];
int j = 0;
int k = 0;
for (int i = 0; i < 10; i++) {
if (a[i] % 2 == 0) {
b[j] = a[i];
j++;
} else {
c[k] = a[i];
k++;
}
}
for (int r = 0; r < b.length; r++) {
System.out.print(b[r] + " ");
}
System.out.println();
for (int r = 0; r < c.length; r++) {
System.out.print(c[r] + " ");
}
System.out.println();

}

}