Playtomic.JSON.GetLastIndexOfNumber C# (CSharp) Method

        protected int GetLastIndexOfNumber(char[] json, int index)
        {
            int lastIndex;
            for (lastIndex = index; lastIndex < json.Length; lastIndex++) {
                if ("0123456789+-.eE".IndexOf(json[lastIndex]) == -1) {
                    break;
                }
            }
            return lastIndex - 1;
        }