functions</span> {</span>
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a>  <span class="dt">array</span>[] <span class="dt">int</span> permutation_rng(<span class="dt">int</span> N) {</span>
<span id="cb3-3"><a href="#cb3-3" aria-hidden="true" tabindex="-1"></a>    <span class="dt">array</span>[N] <span class="dt">int</span> y;</span>
<span id="cb3-4"><a href="#cb3-4" aria-hidden="true" tabindex="-1"></a>    <span class="cf">for</span> (n <span class="cf">in</span> <span class="dv">1