SquareRoot_fast.rb

puts "Enter a number to find the square"
number = gets.chomp.to_i

puts "Enter the accepted error"
error = gets.chomp.to_i

def abs(firstNum,secNum)
    if firstNum>secNum

        firstNum-secNum
    else
        puts "Why not work"
        secNum - firstNum
    end
end

def square (x)
    x * x
end

def sqrt(x,d)
    max = x/2.0
    min = 0
    mid = x/2.0

   until square(mid)-x <=d and square(mid)-x >=d
        
        mid = (max+min)/2
        if square(mid)-x>0
            max = mid

        else
            puts "I am in here"
            min = mid

        end
    end

        mid
end

puts sqrt(number,error)