Guess a number program with Java

Question

I am trying to create a program in Java in which the computer randomly guesses a number between 1-100 and allows the user to guess to the number.

If the number is lower

Answer 1

Try this, hope it will help.

public class BinarySearch

{ static Scanner sc = new Scanner(System.in);

public static void main(String a[]) {
    int count = 100;
    BinarySearch bs = new BinarySearch();
    int[] inputArr = bs.takeInputsInCount(count);
    System.out
            .println("For every question, press Enter if answer is YES, else you can press any other key");
    System.out
            .println("Think of a number between 1 to 100, press Enter to continue");
    String input = sc.nextLine();
    if (input.isEmpty()) {
        int element = bs.getElementByBinarySearch(inputArr, count);
        System.out.println("Your number is : " + element);
    } else {
        System.out.println("exiting... ");

    }
}

private int getElementByBinarySearch(int[] arr, int len) {
    int first = 0;
    int last = len - 1;
    if (isEqual(arr[first]))
        return arr[first];
    if (isEqual(arr[last]))
        return arr[last];
    while (last > first) {
        int middle = (first + last) / 2;

        if (isEqual(arr[middle]))
            return arr[middle];
        if (isGreater(arr[middle])) {
            first = middle + 1;
            if (isEqual(arr[first]))
                return arr[first];
        } else {
            last = middle - 1;
            if (isEqual(arr[last]))
                return arr[last];
        }

    }

    return 0;
}

private boolean isEqual(int m) {
    Boolean equalFlag = false;

    System.out.println("Is your number :" + m + " ?");
    String input = sc.nextLine();
    if (input.isEmpty()) {
        equalFlag = true;
    }
    return equalFlag;

}

private boolean isGreater(int m) {
    Boolean equalFlag = false;

    System.out.println("Is your number greater than :" + m + " ? ");
    String input = sc.nextLine();
    if (input.isEmpty()) {
        equalFlag = true;
    }
    return equalFlag;

}

private int[] takeInputsInCount(int count) {
    int length = count;
    int tempArray[] = new int[length];
    for (int i = 0; i < length; i++) {
        try {
            tempArray[i] = i + 1;
        } catch (Exception e) {
            break;
        }
    }

    return tempArray;
}}