title: list input data into sas from txt file & separate into columns
body: <p>I am having trouble with a <code>.txt</code> data set that is separated by spaces. It is in list input format and I want to separate it into three columns. </p>
  
  <p>I've tried using row pointers, column pointers, and other methods within the input statement. I've been searching online and I think an array would work in this situation but I'm not sure how to do that (I'm new to SAS). </p>
  
  <pre><code>1 1 2 2 1 1 3 1 2 4 0 3 5 1 3 6 1 2 7 0 3 8 1 3 9 0 1 10 0 2 11 1 1 
  </code></pre>
  
  <p>I want the data to be in columns: </p>
  
  <pre><code>ID Group Time. 
  
  1 .  1 .   2
  
  2 .  1 .   1
  
  3 .  1 .   2
  </code></pre>
  
  <p>The id numbers go up to 90</p>