mes are really high</span>
<span class='va'>runtime</span> <span class='op'>=</span> <span class='kw'>function</span><span class='op'>(</span><span class='va'>algorithm</span>, <span class='va'>x</span>, <span class='va'>y</span><span class='op'>)</span> <span class='op'>{</span>
  <span class='fu'><a href='https://Rdatatable.gitlab.io/data.table/reference/fifelse.html'>ifelse</a></span><span class='op'>(</span><span class='va'>algorithm</span> <span class='op'>==</span> <span class='st'>"nrow"</span>, <spa