Given a tree, rearrange the tree inin orderso that the leftmost node in the tree is now the root of the tree, and every node has no left child and only right child. Example : Input: , , , , ,null, , ...
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In a deck of cards, every card has a unique integer. You can order the deck in any order you want. Initially, all the cards start face down ...
二叉查找树（Binary Search Tree），也称二叉排序树（binary sorted tree），是指一棵空树或者具有下列性质的二叉树： 若任意节点的左子树不空，则左子树上所有结点的值均小于它的根结点的值 任意节点的右子树不空，则右子树上所有结点的值均大于它的根结点的值 ...
Given the root node of a binary search tree (BST) and a value. You need to find the node in the BST that the node's value equals the given value. ...
在计算机科学中，AVL树是最先发明的自平衡二叉查找树。AVL树得名于它的发明者 G.M. Adelson-Velsky 和 E.M. Landis，他们在 1962 年的论文 "An algorithm for the organization of information" 中发 ...
Given an unsorted array of integers, find the length of longest increasing subsequence. Example: Note: There may be more than one LIS ...
Given an integer array, your task is to find all the different possible increasing subsequences of the given array, and the length ...
Given an unsorted array return whether an increasing subsequence of length 3 exists or not in the array. Formally the function should: Return ...
Given an integer matrix, find the length of the longest increasing path. From each cell, you can either move to four directions: left, right, up ...
