"n">starts</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">where</span><span class="p">(</span><span class="n">diffs</span> <span class="o">==</span> <span class="mi">1</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span>
    <span class="n">ends</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">where</span><span class="p">(</span><span class="n">diffs</span> <span class="o">==</span> 