The eighth java job

1. There are 10 judges to score, (remove one highest and one lowest) to get the average score.

import java.util.*;
public class demo5 {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        double[] arry = new double[10];
        System.out.println ( "Please enter the score of 10 judges" );
         for ( int i = 0; i <10; i ++ ) {
            arry [i] = s.nextDouble (); // Fraction 
        }
         // sort the array from big to small 
        double temp = 0 ;
         for ( int i = 0; i <arry.length; i ++ ) {
             for ( int j = 0; j <arry.length-i-1; j ++ ) {
                 if (arry [j] <arry [j + 1 ]) {
                    temp = arry[j];
                    arry[j] = arry[j+1];
                    arry [j+1] = temp;
                }
            }
        }    
        // Traverse the new array
 //         for (int i = 0; i <10; i ++) {
 //             System.out.print (arry [i]);
 //         }
         // Let the maximum value be 0 
        arry [0 ] = 0 ;
        arry[9]=0;
        double sum=0,pjs;
        for (int i = 0; i < arry.length; i++) {
            sum+=arry[i];
        }
        pjs=sum/8;
        System.out.println ( "His average score is" + pjs);

    }
}

2. Generate a random array of length 10 (each number ranges from 0 to 99), output after sorting.

import java.util.*;
public class demo5 {
    public static void main(String[] args) {
        Random r = new Random (); // define random number 
        int arry [] = new  int [10 ];
         // input random number in array 
        for ( int i = 0; i <arry.length; i ++ ) {
            arry[i] = r.nextInt(100);
        }
        // Sort the array from large to small 
        int   temp = 0 ;
         for ( int i = 0; i <arry.length; i ++ ) {
             for ( int j = 0; j <arry.length-i-1; j ++ ) {
                 if (arry [j] <arry [j + 1 ]) {
                    temp = arry[j];
                    arry[j] = arry[j+1];
                    arry [j+1] = temp;
                }
            }
        }    
        // Traverse the new array 
        for ( int i = 0; i <10; i ++ ) {
            System.out.print(arry[i]+" ");
        }
}
}

3. Make 7 out of 35 lottery programs. (That is, 1 ~ 35 randomly generates 7 non-repeating numbers)

import java.util.*;
public class demo5 {
    public static void main(String[] args) {
        Random r = new Random (); // define random number 
        int arry [] = new  int [7 ];
         int t = 0 ;
        ban:for (int i = 0; i < arry.length; i++) {
            arry[i]=r.nextInt(35)+1;
            t=arry[i];
            for (int j = 0; j < i; j++) {
                if(arry[j]==t) {
                    i--;
                    continue ban;
                }
            }
        }
        for (int i = 0; i < arry.length; i++) {
            System.out.print(arry[i]+" ");
        }
}
}

4. Define an int array of length 10 (if there is no special instruction, static assignment and dynamic assignment can be used), statistics of the maximum and minimum values ​​in the array, and the number of odd and even numbers

public  class demo5 {

    public static void main(String[] args) {
        int[] a = new int[]{2,3,52,3,69,58,46,12,53,27};
        int max=a[0];
        int mini=a[0];
        int jishu=0;
        int oushu=0;
        for (int i = 1; i <a.length ; i++) {
            if (a[i]>max){
                max=a[i];
            }
        }
        for (int j = 1; j <a.length ; j++) {
            if (a[j]<mini){
                mini=a[j];
            }
        }
        for (int k = 0; k< a.length; k++) {
            if (a[k]%2==0){
                oushu + = 1 ;
            }else {
                jishu + = 1 ;
            }
        }
        System.out.println ( "The maximum value is" + max + "The minimum value is" + mini + "Even numbers have" + oushu + "pieces" + "Odd numbers have" + jishu + "pieces" );
    }
}