随笔分类 - PAT(甲级）
摘要：Given any permutation of the numbers {0, 1, 2,..., N 1}, it is easy to sort them in increasing order. But what if Swap(0, ) is the ONLY operation that
阅读全文
摘要：An AVL tree is a self balancing binary search tree. In an AVL tree, the heights of the two child subtrees of any node differ by at most one; if at any
阅读全文
摘要：Given three integers A, B and C in [ 263, 263], you are supposed to tell whether A+B C. Input Specification: The first line of the input gives the pos
阅读全文
摘要：A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: + The left subtree of a node contains only node
阅读全文
摘要：Given two sets of integers, the similarity of the sets is defined to be Nc/Nt 100%, where Nc is the number of distinct common numbers shared by the tw
阅读全文
摘要：About 900 years ago, a Chinese philosopher Sima Guang wrote a history book in which he talked about people's talent and virtue. According to his theor
阅读全文
摘要：Sherlock Holmes received a note with some strange strings: "Let's date! 3485djDkxh4hhGE 2984akDfkkkkggEdsb s&hgsfdk d&Hyscvnm". It took him only a min
阅读全文
摘要：If a machine can save only 3 significant digits, the float numbers 12300 and 12358.9 are considered equal since they are both saved as 0.123 105 with
阅读全文
摘要：Given any positive integer N, you are supposed to find all of its prime factors, and write them in the format N = p1^k1 p2^k2 … pm^km. Input Specifica
阅读全文
摘要：If you are a fan of Harry Potter, you would know the world of magic has its own currency system as Hagrid explained it to Harry, "Seventeen silver Sic
阅读全文
摘要：Stack is one of the most fundamental data structures, which is based on the principle of Last In First Out (LIFO). The basic operations include Push (
阅读全文
摘要：Mice and Rice is the name of a programming contest in which each programmer must write a piece of code to control the movements of a mouse in a given
阅读全文
摘要：Forbes magazine publishes every year its list of billionaires based on the annual ranking of the world's wealthiest people. Now you are supposed to si
阅读全文
摘要：Behind the scenes in the computer's memory, color is always talked about as a series of 24 bits of information for each pixel. In an image, the color
阅读全文
摘要：Given a non empty tree with root R, and with weight Wi assigned to each tree node Ti. The weight of a path from R to L is defined to be the sum of the
阅读全文
摘要：A linked list consists of a series of structures, which are not necessarily adjacent in memory. We assume that each structure contains an integer key
阅读全文
摘要：Given a stack which can keep M numbers at most. Push N numbers in the order of 1, 2, 3, ..., N and pop randomly. You are supposed to tell if a given s
阅读全文
摘要：Given two strings S1 and S2, S = S1 S2 is defined to be the remaining string after taking all the characters in S2 from S1. Your task is simply to cal
阅读全文
摘要：The task is simple: given any positive integer N, you are supposed to count the total number of 1's in the decimal form of the integers from 1 to N. F
阅读全文
摘要：Eva loves to collect coins from all over the universe, including some other planets like Mars. One day she visited a universal shopping mall which cou
阅读全文
浙公网安备 33010602011771号