Using Java to achieve random wins and losses in the World Cup

1. To guess the random number in this chapter, you first need to use the Scanner statement to guess how many sets of wins, draws and losses the user needs. If you want to use a few sets, you must use the for loop, and to achieve randomness, you need to use the Math method , for random sampling.
1. Scanner
first uses the Scanner statement to capture user data to confirm that the user needs several sets of random wins, draws and losses.
2.
The principle of the for loop cycle:
it is to do the same thing repeatedly.
   For example: climbing stairs 1-->
       running laps on the playground on the 5th floor 1-->5 laps
       1--5 laps
       start from where 1 lap starts
       and ends 5 The conditions for judging the end point of the circle
       change when running

If you want to execute a normal cycle in the program, it is similar to real life. It needs to meet three conditions (necessary):
initial value, end point judgment condition, change amount

It is allowed to write all three necessary conditions in ()
for (1 initial value; 258 end point judgment condition; 47 variation) { 36 a lot of code to be executed; } use the loop to get several groups of numbers to realize the output of multiple random values # ### 3. Math uses the Math method to define random numbers and achieve the results we want through calculation logic to achieve randomness. According to the above code write:

import java.util.Scanner;//First import the package

    public class SJB {//Create a Demo type file
    public static void main(String[] args){//write an environment
    Scanner input=new Scanner(System.in);//new a Scanner to grab user data
        System.out.println("Please enter the wins and losses of the crew you want to get");//prompt the user
            int Temp=input.nextInt();//grab the data output by the user and store it in the int type Temp
        for (int j=0;j<Temp;j++) {
        double value = Math.random();
        int number = (int) (value * 9 + 1);
        if(number>4&number<6){
            System.out.println("win");
        }else if(number>2&number<4){
            System.out.println("平");
        }else if(number>0&number<2){
            System.out.println("Negative");
            }
        System.out.println(" ");
        }
    }
}

Output demo:

Using Java to achieve random wins and losses in the World Cup

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