title: Concatenate strings of different length into one
body: <p>I have two character objects of different length:</p>
  
  <pre><code>a &lt;- "A"
  bc &lt;- c("B","C")
  </code></pre>
  
  <p>Now I would like to concatenate these in such a manner that I get <code>"ABC"</code>, but <code>paste()</code> repeats <code>a</code> as many times as <code>length(bc)</code>:</p>
  
  <pre><code>paste("a",c("b","c"),collapse="", sep="")
  &gt; "ABAC"
  </code></pre>
  
  <p>Anyone an idea on how to get <code>"ABC"</code> instead of <code>"ABAC"</code>?</p>
  
  <p>Many thanks!</p>