Java 程序猜测一个范围内的随机数
编写一个程序，生成一个随机数，并要求用户猜测这个数字是什么。如果用户的猜测高于随机数，程序应显示过高，再次尝试。如果用户的猜测低于随机数，程序应显示过低，再试一次。程序应该使用一个循环，重复直到用户正确猜测随机数。
Input: 15 (a random value that is not known before)
Output: Guess a number between 1 and 100:
1
Too low, try again
Guess a number between 1 and 100:
10
Too low, try again
Guess a number between 1 and 100:
25
Too high, try again
Guess a number between 1 and 100:
20
Too high, try again
Guess a number between 1 and 100:
15
Yes, you guessed the number.
例
Java 语言(一种计算机语言，尤用于创建网站)
// Java Program to guess a Random Number Generation
import java.util.Random;
import java.util.Scanner;
public class GFG {
public static void main(String[] args)
{
// stores actual and guess number
int answer, guess;
// maximum value is 100
final int MAX = 100;
// takes input using scanner
Scanner in = new Scanner(System.in);
// Random instance
Random rand = new Random();
boolean correct = false;
// correct answer
answer = rand.nextInt(MAX) + 1;
// loop until the guess is correct
while (!correct) {
System.out.println(
"Guess a number between 1 and 100: ");
// guess value
guess = in.nextInt();
// if guess is greater than actual
if (guess > answer) {
System.out.println("Too high, try again");
}
// if guess is less than actual
else if (guess < answer) {
System.out.println("Too low, try again");
}
// guess is equal to actual value
else {
System.out.println(
"Yes, you guessed the number.");
correct = true;
}
}
System.exit(0);
}
}
输出
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