JAVA 3.13

public class shuixianhua {
public static void main(String[] args){
for(int i=100;i<=999;i++){
int x,y,z;
x=i/100;
y=(i-x*100)/10;
z=i-x*100-y*10;
if(i==x*x*x+y*y*y+z*z*z)
{
System.out.println(i);
}
}
}
}

public class qiuhe {
public static void main(String[] args) {
int sum=0;
for(int i=1;i<=1000;i++){
if(i%2!=0){
sum+=i*10+3;
}else{
sum-=i*10+3;
}
}
System.out.println("最后结果是:"+sum);
}
}

public class zhengchu {
public static void main(String[] args){

int i = 1;
for(i = 1 ; i <= 1000 ; i++){
if(i % 3 == 0 && i % 5 == 0 && i % 7 == 0){
System.out.println("结果： " + i);
}
}

}
}

public class jiecheng{
public static void main(String[] args)
{
int result=0;
int f;

for (int i=1; i<=20; i++)
{
f = 1;
for (int j=2; j<=i; j++)
{
f *= j;
}
result+=f;
}
System.out.println("result="+result);
}
}

 

public class shuzu01{
public static void main(String[] args){
int a[]={1,2,3,4,5,6,7,8,9};
int max=a[0];
int min=a[0];
int sum=0;
for(int i=1;i<a.length;i++){
sum+=a[i];
for(int j=0;j<a.length;j++){
if(a[i]>max){
max=a[i];}
if(a[i]<min){
min=a[i];
}
}
}
System.out.println("数组中最大值为:"+max);
System.out.println("数组中最小值为:"+min);
System.out.println("数组中元素的和为:"+sum);
}
}

public class shuzu02 {
public static void main(String[] args) {
int a[] = new int[30], b[] = new int[10];
for (int i = 0; i < a.length; i++) {
a[i] = (int) (Math.random() * 10); System.out.print(a[i]+",");
}
for (int i = 0; i < a.length; i++) {
b[a[i]]++;
}
System.out.println();
for (int i = 0; i < b.length; i++) {
System.out.println(i+"出现了"+b[i]+"次");
}
}
}