Question

<Java>

1-Write a program that converts from a string into an integer number.

For example:

For "123" the program should return 123

For "131", The program should return 131

For "-121" the program should return -121

For "1e3" the program should print an Invalid number

For "a1" the program should print an invalid number

Do not use Integer.parse function

2. Generate a random number in [0, 100]. Write an efficient guess procedure that takes no more than 7 guesses to get any given integer in that range. For each guess, the hint can be one of the following:• Congratulations! You got it.• The guess is too large.• The guess is too small.
Here is a sample output.

Guess #1: 50
The guess is too big.
Guess #2: 24
The guess is too small.
Guess #3: 37
The guess is too big.
Guess #4: 30
The guess is too small.
Guess #5: 33
The guess is too big.
Guess #6: 31
The guess is too small.
Guess #7: 32

Congratulations!

What if the random number is in [0, 1000], how many guesses your program will take?

Answer 1

// Question 2

import java.util.Random;
import java.util.Scanner;

class Main {
public static void main(String[] args) {
  
int nbr = (int)(Math.random() * 101), gs = 1;
Scanner sc = new Scanner(System.in);
int gess, count = 0;
  
System.out.printf("\nGuess #%d: ", gs);
while(count < 10)
{
gess = sc.nextInt();
count++;
  
if(gess < nbr)
System.out.println("Your guess is too small.");
  
else if(gess > nbr)
System.out.println("Your guess is too big.");

if(gess == nbr)
{
System.out.print("\nCongratulations! You got it.");
break;
}

if(count == 7)
{
System.out.print("\nSorry, you didn't guess the answer in 7 tries.\nThe number was " + nbr + ".");
break;
}
System.out.printf("\nGuess #%d: ", ++gs);
}
}
}

// For [0, 1000] would take 10 guesses because 2^10 = 1024

// Please note that we are allowed to answer one question at a time. So, post accordingly.