Programmer Think

Title Link: poj 2286 The Rotation Game Title Purpose: make the values of the middle 8 elements the same by rotating in 8 directions. Examples are as follows: I. problem solving instructions #1 note: during Rotation, the matrix data needs to be re assigned, otherwise it will change together. #2. Note: the operation procedure is stored in a ...

Print the whole process of moving the n-layer Hanoi tower from the leftmost to the rightmost Violent recursion is trying 1) The problem is transformed into a sub problem of the same kind of problem with reduced scale 2) There are explicit conditions (base case) that do not need to continue recursion 3) There is a decision-making process whe ...

Title: Give you an array arr of n integers with subscripts starting from 0. The interval between two elements in arr is defined as the absolute difference between their subscripts. More formally, the interval between arr[i] and arr[j] is | i - j |. Returns an array of intervals of length n, where intervals[i] is the sum of the intervals bet ...

describe There is a grid of rows and cols columns on the ground. The coordinates are from [0,0] to [rows-1,cols-1]. A robot starts to move from the grid with coordinates 0,0. Each time, it can only move one grid in the left, right, upper and lower directions, but it cannot enter the grid where the sum of digits of row coordinates and column co ...

As long as you keep reading it, I'm sure you can learn it!! Preface Definition of Dynamic Planning (DP): Dynamic Planning is an extension of the idea of division, and in a general sense, it is the art of turning big things into small ones and small things into nothing. Dynamic planning has the following three characteristics: ...

Today, let's take a different sort method - binary tree sort. This sorting method is more interesting and easy to operate. This paper refers to Python data analysis from introduction to mastery, Zhang Xiaoyu and Li Jing, electronic industry press, 5.3 2 sorting Binary tree sorting The process of binary tree sorting is mainly the constru ...

Antecedents: Go language learners. Article reference https://labuladong.gitee.io/algo , the code is written by yourself. If there is anything wrong, thank you for your correction In order to facilitate downloading and sorting, articles on golang algorithm have been open source and placed in: https://github.com/honlu/GoLabuladongAlgorithmhttps ...

sort Quick row arr = [np.random.randint(1,100) for i in range(11)] def quickSort(data): if len(data)<2: return data else: tmp = data[-1] data.pop() left,right = [],[] for item in data: if item <=tmp: left.append(item) else: right.appe ...

The discretization in this section refers in particular to the order preserving discretization of integers. What is 1 There is such a problem in processing: processing the number (eg.105) with a small number in a large data range (eg.0 ~ 109), that is, "large value range, small number". The large storage space and high time complexi ...

Data structure - binary tree - Application - BST & AVL & RBT Binary sort tree (BST) Basics demand Give you a sequence (7, 3, 10, 12, 5, 1, 9), which is required to query and add data efficiently. Use array (1) The array is not sorted. Advantages: it is added directly at the end of the array, which is fast. Disadvantages: t ...