c＃pad left to string
我想找到一个有效的方法：
我有一个像这样的字符串：
'1,2,5,11,33'
'01,02,05,11,33'
没有找到相关结果
已邀请:
2 个回复
惜堡沁戚
string padded = string.Join(",", original.Split(',') .Select(x => x.PadLeft(2, '0')));之后拨打。） 这绝对不是最有效的解决方案，但在我证明它不够有效之前，我会使用它。这是另一种选择......// Make more general if you want, with parameters for the separator, length etc public static string PadCommaSeparated(string text) { StringBuilder builder = new StringBuilder(); int start = 0; int nextComma = text.IndexOf(','); while (nextComma >= 0) { int itemLength = nextComma - start; switch (itemLength) { case 0: builder.Append("00,"); break; case 1: builder.Append("0"); goto default; default: builder.Append(text, start, itemLength); builder.Append(","); break; } start = nextComma + 1; nextComma = text.IndexOf(',', start); } // Now deal with the end... int finalItemLength = text.Length - start; switch (finalItemLength) { case 0: builder.Append("00"); break; case 1: builder.Append("0"); goto default; default: builder.Append(text, start, finalItemLength); break; } return builder.ToString(); }瓜唱鬼
string input= "1,2,3,11,33"; string[] split = string.Split(input); List<string> outputList = new List<string>(); foreach(var s in split) { outputList.Add(s.PadLeft(2, '0')); } string output = string.Join(outputList.ToArray(), ',');