Replace all occurences of a string from a string array

Question

I have a string array like:

 string [] items = {\"one\",\"two\",\"three\",\"one\",\"two\",\"one\"};

I would like to replace all ones with z

Answer 1

Theres no way to do that without looping.. even something like this loops internally:

string [] items = {"one","two","three","one","two","one"};

string[] items2 = items.Select(x => x.Replace("one", "zero")).ToArray();

I'm not sure why your requirement is that you can't loop.. however, it will always need to loop.

Answer 2

You can also do it in parallel:

Parallel.For(0, items.Length,
  idx => { if(items[idx] == "one") { item[idx] = "zero"; } });

Answer 3

You can try this, but I think, It will do looping also.

string [] items = {"one","two","three","one","two","one"};
var str= string.Join(",", items);
var newArray = str.Replace("one","zero").Split(new char[]{','});

Answer 4

string[] newarry = items.Select(str => { if (str.Equals("one")) str = "zero"; return str; }).ToArray();

Answer 5

There is one way to replace it without looping through each element:

 string [] items = {"zero","two","three","zero","two","zero"};

Other than that, you have to iterate through the array (for/lambda/foreach)

Answer 6

string [] items = {"one","two","three","one","two","one"};
items =  items.Select(s => s!= "one" ? s : "zero").ToArray();

Found answer from here.