8888888888888

1.

package sr;

public class sj1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int[] a = { 10, 20, 30, 40, 50 };
        for (int i = 0; i < a.length; i++) {
            System.out.println(a[i]);
        }
}
}

 

 

 

2.

package sr;

import java.util.Scanner;

public class sj2 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        char[] a = { 'n', 'e', 'u', 's', 'o', 'f', 't', 'e', 'd', 'u', 'c',
                'a', 't', 'i', 'o', 'n' };
        char[] b = new char[16];
        System.arraycopy(a, 0, b, 0, a.length);
        for (int i = 0; i < b.length; i++) {
            System.out.print(b[i]);
        }
        }
    }

 

3.

package sr;

public class sj3 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int[] a = { 1, 6, 2, 3, 9, 4, 5, 7, 8 };
        for (int i = 0; i < a.length - 1; i++) {
            for (int j = 0; j < a.length -1- i; j++) {
                if (a[j] < a[j + 1]) {
                    int temp = a[j];
                    a[j] = a[j + 1];
                    a[j + 1] = temp;
                }
            }
        }
        for(  int i = 0; i < a.length ; i++){
            System.out.println(a[i]);
        }
        }
    }

 

 

 

4.

package sr;

import java.util.Scanner;

public class sj4 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        double[][] a = new double[5][4];
        for (int i = 0; i < a.length; i++) {
            for (int j = 0; j < a[i].length; j++) {
                a[i][j] = (i + 0.1) * (j - 0.1);
            }
        }
        System.out.println("是");
        for (int i = 0; i < a.length; i++) {
            for (int j = 0; j < a[i].length; j++) {
                System.out.print(a[i][j] + "   ");
            }
            System.out.println();
        }
    }

}

 

 

 

5.

ppackage sr;

public class sj5 {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
int[] a = { 18, 25, 7, 36, 13, 2, 89, 63 };
int max = a[0];
int maxdx = 0;
for (int i = 0; i < a.length; i++) {
if (a[i] > max) {
max = a[i];
maxdx=i;
}
}
System.out.println("最大值是" + max);
System.out.println("下标是"+maxdx);
}

}

 

 

 

 

 

1.

package sr;

import java.util.Scanner;

public class zy1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int []a=new int[3];
        Scanner input=new Scanner(System.in);
        for (int i = 0; i < a.length; i++) {
            a[i]=input.nextInt();
        }
        for (int j = a.length-1; j >0; j--) {
               System.out.println(a[j]);
         }
        System.out.println(a[0]);
    }

}

 

 

 

 

2.

package sr;

import java.util.Scanner;

public class zy2 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
       Scanner input=new Scanner(System.in);
       int a[]=new int[5];
       for (int i = 0; i < a.length; i++) {
           a[i]=input.nextInt();
        }
       for (int i = 0; i < a.length; i++) {
            for (int j = i+1; j < a.length; j++) {
                if (a[i]==a[j]) {
                    a[j]=0;
                }
            }
      }
       for (int i = 0; i < a.length; i++) {
           System.out.println(a[i]);
    }
    }

}

 

3.

package sr;

import java.util.Scanner;

public class zy3 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int a[]={-10,2,3,246,-100,0,5};
        int sum=0;int average=0;
        int max=0;int min=0;
        for (int i = 0; i < a.length; i++) {
            sum+=a[i];
            average=sum/a.length;
            if (a[i]>max) {
                max=a[i];
            }
            if (a[i]<min) {
                min=a[i];
            }
        }
        System.out.println("平均值"+average+"最大值"+max+"最小值"+min);
        
        

}
    }

 

 

4.·

package wasr;

import java.util.Scanner;

public class z4 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input=new Scanner(System.in);
        int a[]=new int [20];
        a[0]=1;
        a[1]=1;
        for (int i = 2; i < a.length; i++) {
            
            a[i]=a[i-1]+a[i-2];
            
        }
        for (int i = 0; i < a.length; i++) {
            System.out.println(a[i]);
        }
        
    }

}

 

5.

 

package wasr;

import java.util.Arrays;
import java.util.Random;

public class zy5 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int a[]=new int[10];
          Random r=new Random();
          for (int i = 0; i < a.length; i++) {
           a[i]=r.nextInt(101);
          }
          for (int i = 0; i < a.length; i++) {
           System.out.println(a[i]);
          }
          System.out.println("排序后为");
          Arrays.sort(a);
          for (int i = 0; i < a.length; i++) {
           System.out.println(a[i]);
          }
    }

}