小刀初试

摘要： In Binary Tree, Inorder successor of a node is the next node in Inorder traversal of the Binary Tree. Inorder Successor is NULL for the last node in... 阅读全文

摘要： 1. Pass by pointer VS referenceA pointer can receive a NULL parameter, a reference parameter can not. If there's ever a chance that you could want to ... 阅读全文

摘要： Given an array of numbers, nums, return an array of numbers products, where products[i] is the product of all nums[j], j != i.Input : [1, 2, 3, 4, 5]O... 阅读全文

摘要： 1. 黑帽白帽有一个牢房，有3个犯人关在其中。因为玻璃很厚，所以3个人只能互相看见，不能听到对方说话的声音。”有一天，国王想了一个办法，给他们每个人头上都戴了一顶帽子，只叫他们知道帽子的颜色不是白的就是黑的，不叫他们知道自己所戴帽子的是什么颜色的。在这种情况下，国王宣布两条如下： 1．谁能看到其他... 阅读全文

摘要： There are K pegs. Each peg can hold discs in decreasing order of radius when looked from bottom to top of the peg. There are N discs which have radius... 阅读全文

摘要： A message containing letters from A-Z is being encoded to numbers using the following mapping:'A' -> 1'B' -> 2...'Z' -> 26Given an encoded message con... 阅读全文

摘要： The count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ...1 is read off as "one 1" or 11.11 is read off ... 阅读全文

摘要： Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST.» Solve this problem[Thoughts]It is simil... 阅读全文

摘要： Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpo... 阅读全文

摘要： Given preorder and inorder traversal of a tree, construct the binary tree.Note:You may assume that duplicates do not exist in the tree.» Solve this pr... 阅读全文