public List<string> subStringByCount(string text, int count) { int start_index = 0;//开始索引 int end_index = count - 1;//结束索引 double count_value = 1.0 * text.Length / count; double newCount = Math.Ceiling(count_value);//向上取整,只有有小数就取整,比如3.14,结果4 List<string> list = new List<string>(); for (int i = 0; i < newCount; i++) { //如果end_index大于字符长度,则添加剩下字符串 if (end_index > text.Length - 1) { list.Add(text.Substring(start_index)); break; } else { list.Add(text.Substring(start_index, count)); start_index += count; end_index += count; } } return list; }
效果:传入字符串“123456789”,个数传4
返回数组:["1234","5678","9"]