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Count BST node using queue data structure(iterative approach)

Time complexity of this program O(n)

Accepted Output

Given BST tree node is:

543, 487, 573, 486, 514, 800, 509, 532, 510, 523, 522

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543487514532509573486523522510800

Result :

BST node is [11]

Given BST tree node is:

489 439 581 410 482 537 496 539 514 496

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489439581537496514496410539482

Result :

BST node is [10]

Execution process: Suppose following data are inserted on BST.

Given binary search tree Given Binary search tree, Counted all nodes of given tree 1509030904010151080

Code execution

Execution process Execution process to count all binary search tree nodes Stack Areamainqueue(pointer)root(pointer)enqueuecount (int) =1help(pointer)new_node(pointer)queue(pointer)start(pointer)temp(pointer) Heap Areastruct Treedata (int)= 150left_child (pointer) right_child (pointer)= NULLstruct Treedata (int)= 90left_child (pointer) right_child (pointer)= NULLstruct Treedata (int)= 30left_child (pointer) right_child (pointer) struct Treedata (int)= 90left_child (pointer) right_child (pointer)= NULLstruct Treedata (int)= 40left_child (pointer)= NULLright_child (pointer) struct Treedata (int)= 10left_child (pointer) right_child (pointer) struct Treedata (int)= 15left_child (pointer)= NULLright_child (pointer)= NULLstruct Treedata (int)= 10left_child (pointer)= NULLright_child (pointer)= NULLstruct Treedata (int)= 80left_child (pointer)= NULLright_child (pointer)= NULLstruct Queuenode (pointer) next (pointer)= NULL

Given c program to count binary search tree all nodes. Iterative approach.

Output
 BST Data is :  10  10  15  30  40  80  90  90  150
 Free BST node
 Number of Node :- 9
 Free Memory of Queue

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