Question: What algorithm does this code implement? BTNode v = lastNode; if ( isRoot ( v ) ) return v . leftChild ( ) ; while

What algorithm does this code implement?
BTNode v = lastNode;
if (isRoot(v)) return v.leftChild();
while(!isLeftChild(v) && !isRoot(v.parent()))
v = v.parent();
v = sibling(v);
while(isInternal(v))
v = v.leftChild();
return v;
a.
findLastNode
b.
removeLastNode
c.
Up-Heap Bubbling
d.
Down-Heap Bubbling
e.
findInsertionNode

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