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);
}

}

原文地址:https://www.cnblogs.com/kon-kon/p/8057564.html