leetcode系列---atoiFunction C#code

標籤：line   static   continue   out   ase   rgs   控制   res   ram   

Function:

 /// <summary>        /// ToInt        /// </summary>        /// <param name="str"></param>        /// <returns></returns>        public static int atoi(string str)        {            string strNew = str.Trim();            string ch = strNew.Substring(0, 1);            string result = "";            int bl = 0;            double re;            bool flag = true;            for (int i = 1; i < strNew.Length; i++)            {                string s = strNew.Substring(i, 1);                if (int.TryParse(s, out bl))                {                    if (Convert.ToInt32(s) == 0)                        continue;                    switch (ch)                    {                        case "0":                            result = result + s.ToString();                            break;                        case "+":                            result = result + s.ToString();                            break;                        case "-":                            flag = false;                            result = result + s.ToString();                            break;                        default:                            if (i == 1)                                result = result + ch.ToString();                            result = result + s.ToString();                            break;                    }                }                else                    break;            }            if (!string.IsNullOrEmpty(result))            {                re = Convert.ToDouble(result);                if (!flag)                    re = -re;                if (re < int.MinValue || re > int.MaxValue)                    re = 0;            }            else                re = 0;            return (int)re;        }

控制台展示：

static void Main(string[] args)        {            Console.WriteLine("請輸入要轉化的字串：");            string str = Console.ReadLine();            int re = atoi(str);            if (re != 0)                Console.WriteLine("轉化後：" + re);            else                Console.WriteLine("該字串不能轉換為整數！");            Console.ReadKey();        }

　　

leetcode系列---atoiFunction C#code