JAVA99

1. There are 10 judges to score, (remove one highest and one lowest) to get the average score. 
package ssa; 
 
import java.util.Scanner; 
 
public class lianxi { 
    public static void main (String [] args) { 
        int [] arry = new int [] {1,2,3,4,5,6,7,8 , 9,10}; 
        for (int i = 0; i <arry.length-1; i ++) { 
            for (int j = 0; j <arry.length-1-i; j ++) { 
                if (arry [j] > arry [j + 1]) { 
                    int tmp = arry [j]; 
                    arry [j] = arry [j + 1]; 
                    arry [j + 1] = tmp; 
                } 
            } 
        } 
        int sum = 0; 
        for (int i = 1; i <arry.length-1; i ++) { 
            sum + = arry [i];
        }
        System.out.println ("Average score:" + sum / (arry.length-2.0)); 
    } 
 
}

　　

2. Learn about Java random numbers by yourself, generate a random array of length 10 (each number ranges from 0 to 99), and output after sorting. 
package ssa; 
 
import java.util.Random; 
 
 
public class lianxi { 
    public static void main (String [] args) { 
        int [] arry = new int [10]; 
        Random r = new Random (); 
        for (int i = 0 ; i <arry.length; i ++) { 
            arry [i] = r.nextInt (100); 
        } 
        int t; 
        for (int i = 0; i <arry.length-1; i ++) { 
            for (int j = 0 ; j <arry.length-1-i; j ++) { 
                if (arry [j + 1]> arry [j]) { 
                    t = arry [j]; 
                    arry [j] = arry [j + 1]; 
                    arry [ j + 1] = t;  
                }
            }
        }
        for (int i=0;i<arry.length;i++) {
            System.out.println(i);
        }
 
    }
}

　　

3. Make 7 out of 35 lottery programs. (It is 1 ~ 35 randomly generated 7 non-repeating numbers) 
package ssa; 
 
import java.util.Random; 
 
 
public class lianxi { 
    public static void main (String [] args) { 
       int a [] = new int [7]; 
        Random r = new Random (); 
        for (int i = 0; i <a.length; i ++) { 
            a [i] = r.nextInt (35) +1; 
        } 
        for (int x = 0; x <a. length; x ++) { 
            System.out.println (a [x]); 
        } 
  
    } 
  
}
　　

　　

4. Define an int array of length 10 (if there is no special instructions, static assignment and dynamic assignment can be), the maximum and minimum values ​​in the array, and the number of odd and even numbers. 
package ssa; 
 
import java.util.Random; 
 
 
public class lianxi { 
    public static void main (String [] args) { 
    int a [] = {10, 20, 33, 34, 87, 90, 88, 9, 38, 44 }, q = 0; 
        int o = 0, max = a [0], min = a [0]; 
        for (int i = 0; i <a.length; i ++) { 
            if (a [i]% 2 = = 0) { 
                o = o + 1; 
            } else { 
                q = q + 1; 
            } 
        } 
        for (int x = 0; x <a.length; x ++) { 
            if (a [x]> max) { 
                max = a [x]; 
            } 
        }
        for (int y = 0; y <a.length; y ++) { 
            if (a [y] <min) { 
                min = a [y]; 
            } 
        } 
        System.out.println ("The maximum value is" + max + " , The minimum value is "+ min +", odd number has "+ q +", even number has "+ o +" number "); 
    }