- using System; 
- using System.Text.RegularExpressions; 
- public class Test 
- { 
- 	public static void Main() 
- 	{ 
- 		var input = "stacktraceabcdefghijklmnopqrstuvwxyztacktraceabcdefghijklmnopqrswxyztacktraceabcdefghijk"; 
- 		var regex = new Regex(@".{10}"); 
- 		string result = regex.Replace(input, "$&" + Environment.NewLine); 
- 		Console.WriteLine(result); 
- 	} 
- } 
				dXNpbmcgU3lzdGVtOwp1c2luZyBTeXN0ZW0uVGV4dC5SZWd1bGFyRXhwcmVzc2lvbnM7CnB1YmxpYyBjbGFzcyBUZXN0CnsKCXB1YmxpYyBzdGF0aWMgdm9pZCBNYWluKCkKCXsKCQl2YXIgaW5wdXQgPSAic3RhY2t0cmFjZWFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6dGFja3RyYWNlYWJjZGVmZ2hpamtsbW5vcHFyc3d4eXp0YWNrdHJhY2VhYmNkZWZnaGlqayI7CgkJdmFyIHJlZ2V4ID0gbmV3IFJlZ2V4KEAiLnsxMH0iKTsKCQlzdHJpbmcgcmVzdWx0ID0gcmVnZXguUmVwbGFjZShpbnB1dCwgIiQmIiArIEVudmlyb25tZW50Lk5ld0xpbmUpOwoJCUNvbnNvbGUuV3JpdGVMaW5lKHJlc3VsdCk7Cgl9Cn0=