Such as: the input string str1, delete the str1 which all numeric characters 0 to 9, output string after processing
Novice small white, solve, thank you

CodePudding user response:

With regular, this is my train of thought

 
Private static void Main (string [] args) 
{
Console. WriteLine (" please input string... "); 
String input=Console. ReadLine (); 

Console. WriteLine ("=====separation line====="); 

The string result=GetResult (input); 
Console. WriteLine ($" result: {result} "); 

Console.ReadKey(); 
} 

The static string GetResult (string STR) 
{
StringBuilder sb=new StringBuilder(); 

for (int i=0; I & lt; STR. Length; I++) 
{
if (! The Regex. IsMatch (STR [I] the ToString (), "^ [0-9] $")) 
{
Sb. Append (STR [I] the ToString ()); 
} 
} 
Return sb. ToString (); 
} 

CodePudding user response:

for (int i=0; I & lt; 10; I++)
{
STR=STR. Replace (i.T oString (), string. The Empty);
}

If it is a simple, direct the Replace, faster,
Regular good scalability