Monkey carry banana

MonkeyMoveBanana.cs

namespace MonkeyMoveBanana
{
    class Program
    {
        static void Main(string[] args)
        {
            int left = CalculateMaxBananaLeft(50, 100, 50, 1);
            Console.WriteLine(left);
            Console.ReadKey();
        }
        /* 微博@陈利人 面试题
         一个小猴子边上有100 根香蕉，它要走过50 米才能到家，每次它最多搬50 根香蕉，每走1 米就要吃掉一根，请问它最多能把多少根香蕉搬到家里。
         */
        static int CalculateMaxBananaLeft(int maxCarry, int totalBanana, int distance, int consume)
        {
            int left = totalBanana;
            int movedDistance = 0;
            int remainder = 0;
            int quotient = 0;
            int moveTimePerUnit = 0;
            int costPerUnit = 0;

            while (left > maxCarry && movedDistance < distance)
            {
                remainder = left % maxCarry;
                quotient = left / maxCarry;
                moveTimePerUnit = remainder == 0 ? quotient : quotient + 1;
                costPerUnit = consume * (moveTimePerUnit * 2 - 1);

                movedDistance++;
                left = left - costPerUnit;
                if (left - maxCarry <= costPerUnit)
                {
                    break;
                }
            }

            left = maxCarry - (distance - movedDistance) * consume;

            return left;
        }
    }
}