title: Get the letters (ABCDE) between two letters (AE) using C#
body: <p>I need to get the letters as an array on passing two letters using C#</p>
  
  <p>For ex.: When i pass <code>"AE"</code>, i need to get the {A,B,C,D,E} as an array. and passing <code>"FJ"</code> should return {F,G,H,I,J}.</p>