Get strings [] with index index int []

Question

I have a string[] and want to get the string[] elements with the index that I know about, specified in int[] .

 string[] stringArray = { "a", "b", "c", "d", "e", "f", "g" }; int[] indices = { 1, 2, 4, 6 }; 

From this I am trying to get a string[] containing { "b", "c", "e", "g" } . It is preferable to use a lambda expression. How can I do it?

Answer 1

One way to do this is this.

 string[] result = indices.Select(i => stringArray[i]).ToArray() 

Answer 2

 indices.Select(i => stringArray[i]); 

Answer 3

 stringArray.Where((x,index) => indices.Contains(index)); 

Answer 4

 foreach( int i in indices){ string s = stringArray[i] //DO stuff } 

Answer 5

LINQ: var result = from indice in indices select stringArray[indice]
LAMBDA EXPRESSION: var result = indices.Select(i => stringArray[i])

Answer 6

Something like that:

 var result= ( from str in stringArray.Select ((a,i) =>new {a,i}) where indices.Contains(str.i) select str );