数组
package com.aila;
public class Ailajiang {
public static void main(String[] args) {
int[] arr = new int [30];
arr[0] = 1;
arr[1] = 1;
for(int i = 2;i < arr.length;i++)
arr[i] = arr[i - 1] + arr[i - 2];
for(int i : arr)
System.out.println(i);
}
}
package com.aila;
public class ailasang {
public static void main(String[] args) {
human hm[] = new human[3];
hm[0] = new human("aila",19);
hm[1] = new human("ailala",18);
hm[2] = new human("ailalala",20);
for(int i = 0;i < hm.length;i++)
hm[i].getInfo();
}
}
class human{
private String name;
private int age;
public human(String name,int age) {
this.name = name;
this.age = age;
}
public void getInfo() {
System.out.println("姓名:" + this.name + " 年龄:" + this.age);
}
}
package com.aila;
public class ailale {
public static void main(String[] args) {
int[] arr = {1,5,6,7,9,8,3,0,2,4};
for(int i = 0;i < arr.length;i++) {
for(int j = i + 1;j < arr.length;j++) {
if(arr[i] < arr[j]) {
int temp = arr[i];
arr[i] = arr[j];
arr[j] = temp;
}
}
}
for(int i : arr)
System.out.println(i);
}
}
package com.aila;
public class ailala {
public static void main(String[] args) {
int[] arr = {1,5,6,7,9,8,3,0,2,4};
for(int i = 0;i < arr.length;i++) {
for(int j = 0;j < arr.length - 1 -i;j++) {
if(arr[j] < arr[j + 1]) {
int temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
}
}
}
for(int i : arr)
System.out.println(i);
}
}