ng><br />void</strong> heapify(<strong>Vector</strong>&lt;<strong>int</strong>&gt;&amp; v)<br />{<br /><em><span style="color: #236fa1;">   // The last "node" in this vector is at index v.size() - 1. The bottom-rightmost</span></em><br /><em><span style="color: #236fa1;">   // non-leaf node in a complete binary tree will always be the parent of that last<br />   // node.</span></em><br /><em><span style="color: #236fa1;">   //</span></em><br /><em><span style="color: #236fa1;">   // For example, in the foll