How to use regexp for finding patterns in strings?

Question

I have many patterns that want to find matched string in many string arrays and replace them with \"NON\" string. for example, if we have:

str[0]={\"this\",\"is\         


        

Answer 1

If you want a mutating solution:

public void ReplaceStrs(string[] srcStrs, string[] patterns, string changeTo)
{
    for (int i=0; i < srcStrs; i++) {
        if (Array.IndexOf(patterns, toChange[i]) >= 0) {
            srcStrs[i] = changeTo;
        }
    }
}

Non-mutating:

public string[] ReplaceStrs(string[] srcStrs, string[] patterns, string changeTo) {
     srcStrs.Select(s => Array.IndexOf(patterns, s) >= 0 ? changeTo : s).ToArray();
}

Answer 2

A one liner just for fun :]

str = Array.ConvertAll(str, a => Array.ConvertAll(a, i => patterns.Contains(i) ? "NON" : i));