求解计算公式替换

Question

计算公式：(mc380a*100.2+mc380b*2)/3600/mc380b12+mc380ac*4.9
运算符：+ - * /
替换字符串：
mc380a替换为a1.mc380a
mc380ac替换为a2.mc380ac
mc380b替换为b.mc380b
mc380b12替换为c.mc380b12
替换结果为：(a1.mc380a*100.2+b.mc380b*2)/3600/c.mc380b12+a2.mc380ac*4.9解出来了，有赏。。计算公式 替换 拆分

Answer 1

//先使用占位符 再替换占位符
 string str = "(mc380a*100.2+mc380b*2)/3600/mc380b12+mc380ac*4.9";
            var strNew = str.Replace("mc380b12", "@1").Replace("mc380b", "@2").Replace("mc380ac", "@3").Replace("mc380a", "@4").Replace("@1", "c.mc380b12").Replace("@2", "b.mc380b").Replace("@3", "a2.mc380ac").Replace("@4", "a1.mc380a");            Console.WriteLine(strNew);

Answer 2

这个方法行不通， 你的方法得先找出这些mc380b12，mc380ac包含了其他列的列，先Replace这些列，再Replace其他的列

Answer 3

 string str = "(mc380a*100.2+mc380b*2)/3600/mc380b12+mc380ac*4.9";
            Dictionary<string, string> dic = new Dictionary<string, string>
            {
                {"mc380b12","c.mc380b12"},{"mc380b","b.mc380b"},{"mc380ac","a2.mc380ac"},{"mc380a","a1.mc380a"}
            };
            var chars = new char[] { '*', '/', '+', '-', '(', ')' };
            List<string> list = new List<string>();
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < str.Length; i++)
            {
                if (chars.Contains(str[i]))
                {
                    if (sb.Length > 0)
                    {
                        list.Add(sb.ToString());
                        sb = new StringBuilder ();
                    }
                    list.Add(str[i].ToString());
                }
                else
                {
                    sb.Append(str[i].ToString());
                }
            }
            if (sb.Length > 0)
            {
                list.Add(sb.ToString());
                sb = new StringBuilder() ;
            }           
            for (int j = 0; j < list.Count; j++)
            {
                if (dic.ContainsKey(list[j]))
                {
                    list[j] = dic[list[j]];
                }
                sb.Append(list[j]);
            }
            Console.WriteLine(sb.ToString());
            Console.ReadKey();