Number guessing game in Java

The task is to write a Java program in which a user will get K trials to guess a randomly generated number. Below are the rules of the game:

• If the guessed number is bigger than the actual number, the program will respond with the message that the guessed number is higher than the actual number.
• If the guessed number is smaller than the actual number, the program will respond with the message that the guessed number is lower than the actual number.
• If the guessed number is equal to the actual number or if the K trials are exhausted, the program will end with a suitable message.

Approach: Below are the steps:  

• The approach is to generate a random number using Math.random() method in Java.
• Now using a loop, take K input from the user and for each input print whether the number is smaller or larger than the actual number.
• If within K trials the user guessed the number correctly, print that the user won.
• Else print that he was not able to guess and then print the actual number.

Below is the implementation of the above approach: 

Java

// Java program for the above approach
import java.util.Scanner;

public class GFG {

    // Function that implements the
    // number guessing game
    public static void
    guessingNumberGame()
    {
        // Scanner Class
        Scanner sc = new Scanner(System.in);

        // Generate the numbers
        int number = 1 + (int)(100
                               * Math.random());

        // Given K trials
        int K = 5;

        int i, guess;

        System.out.println(
            "A number is chosen"
            + " between 1 to 100."
            + "Guess the number"
            + " within 5 trials.");

        // Iterate over K Trials
        for (i = 0; i < K; i++) {

            System.out.println(
                "Guess the number:");

            // Take input for guessing
            guess = sc.nextInt();

            // If the number is guessed
            if (number == guess) {
                System.out.println(
                    "Congratulations!"
                    + " You guessed the number.");
                break;
            }
            else if (number > guess
                     && i != K - 1) {
                System.out.println(
                    "The number is "
                    + "greater than " + guess);
            }
            else if (number < guess
                     && i != K - 1) {
                System.out.println(
                    "The number is"
                    + " less than " + guess);
            }
        }

        if (i == K) {
            System.out.println(
                "You have exhausted"
                + " K trials.");

            System.out.println(
                "The number was " + number);
        }
    }

    // Driver Code
    public static void
    main(String arg[])
    {

        // Function Call
        guessingNumberGame();
    }
}

Output:

Below is the output of the above program: