What is missing in the below-given code?1234567avltree leftrotation(avltreenode z): avltreenode w =x-left x-left=w-right w-right=x x-height=max(Height(x-left),Height(x-right))+1 w-height=max(missing)+1 return w

Consider the below left-left rotation pseudo code where the node contains value pointers to left, right child nodes and a height value and Height() function returns height value stored at a particular node.avltree leftrotation(avltreenode z): avltreenode w =x-left x-left=w-right w-right=x x-height=max(Height(x-left),Height(x-right))+1 w-height=max(missing)+1 return w*2 pointsHeight(w-left), x-heightHeight(w-right), x-heightHeight(w-left), xHeight(w-left)

A left rotation operation on an array of size shifts each of the array's elements unit to the left. Given an integer, , rotate the array that many steps left and return the result.ExampleAfter rotations, .Function DescriptionComplete the rotateLeft function in the editor below.rotateLeft has the following parameters:int d: the amount to rotate byint arr[n]: the array to rotateReturnsint[n]: the rotated arrayInput FormatThe first line contains two space-separated integers that denote , the number of integers, and , the number of left rotations to perform.The second line contains space-separated integers that describe .ConstraintsSample Input5 41 2 3 4 5Sample Output5 1 2 3 4ExplanationTo perform left rotations, the array undergoes the following sequence of changes:

Which rotations in AVL trees are known as single rotations?

Which operation is not a valid balancing operation in a height-balanced tree?a)Right rotationb)Left rotationc)Swap operationd)Left-right rotation (LR Rotation)

The number of rotations required to insert a sequence of elements 9, 6, 5, 8, 7, and 10 into an empty AVL tree is?