No.
01 - Binary Search Tree and Double-linked List

Convert a binary search tree to a sorted double-linked list. We can only change the target of pointers, but cannot create any new nodes.

No. 04 - Paths with Specified Sum in Binary Tree

All nodes along children pointers from root to leaf nodes form a path in a binary tree. Given a binary tree and a number, please print out all of paths where the sum of all nodes value is same as the given number.

No. 06 - Post-order Traversal Sequences of Binary Search Trees

Determine whether an input array is a post-order traversal sequence of a binary tree or not. If it is, return true; otherwise return false. Assume all numbers in an input array are unique.

No. 31 - Binary Search Tree Verification

How to verify whether a binary tree is a binary search tree?

No. 45 - Closest Node in a Binary Search Tree

Given a binary search tree and a value

Convert a binary search tree to a sorted double-linked list. We can only change the target of pointers, but cannot create any new nodes.

No. 04 - Paths with Specified Sum in Binary Tree

All nodes along children pointers from root to leaf nodes form a path in a binary tree. Given a binary tree and a number, please print out all of paths where the sum of all nodes value is same as the given number.

No. 06 - Post-order Traversal Sequences of Binary Search Trees

Determine whether an input array is a post-order traversal sequence of a binary tree or not. If it is, return true; otherwise return false. Assume all numbers in an input array are unique.

No. 31 - Binary Search Tree Verification

How to verify whether a binary tree is a binary search tree?

No. 45 - Closest Node in a Binary Search Tree

Given a binary search tree and a value

*k*, please find a node in the binary search tree whose value is closest to*k*.
Given a binary search tree, please check whether there are two nodes in it whose sum equals a given value.

helpful..Thanks:)

ReplyDeleteTks very much for your post.

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Best rgs

which traversal is same in a binary tree and its mirror image

ReplyDeletePostorder traversal

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DeleteThis grouping of your BT problems is ridiculously helpful

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ReplyDeleteTks very much for your post.

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public BSTNode toDoublyLinkedlIst() {

ReplyDeleteBSTNodetest = inorder2(root);

while (test != null ) {

System.out.println(test.data);

test = test.left;

}

return null;

}

public BSTNode inorder2(BSTNode node) {

if (node.left == null && node.right == null) {

return node;

}

BSTNode nodeLeft = inorder2(node.left);

nodeLeft.right = node;

BSTNode nodeRight = inorder2(node.right);

nodeRight.left = node;

return nodeRight;

}

public BSTNode toDoublyLinkedlIst() {

ReplyDeleteBSTNodetest = inorder2(root);

while (test != null ) {

System.out.println(test.data);

test = test.left;

}

return null;

}

public BSTNode inorder2(BSTNode node) {

if (node.left == null && node.right == null) {

return node;

}

BSTNode nodeLeft = inorder2(node.left);

nodeLeft.right = node;

BSTNode nodeRight = inorder2(node.right);

nodeRight.left = node;

return nodeRight;

}

Tks very much for your post.

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You also find all interview questions at link at the end of this post.

Source: Download Ebook: Ultimate Guide To Job Interview Questions Answers:

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There are so many programming language that require interview questions and answers for the people. Knowing the job interview question and answers enables you to give well thought out answers promptly to make yourself shine out from your competition.

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