c1">; i.e. it produces an index of the input</span>
 <span class="nv">array</span> <span class="nv">elements</span> <span class="nv">that</span> <span class="nv">can</span> <span class="nv">order</span> <span class="nv">the</span> <span class="nv">input</span> <span class="nv">array</span> <span class="nv">in</span> <span class="nv">ascending</span> <span class="nv">order</span>.

 <span class="nv">The</span> <span class="nv">ranks</span> <span class="nv">can</span> <span class="nv">be</span> <span class="n