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hash function Basic concepts: out = f( in )in input field, which is infinite by default; out output field, finiteThe same input returns the same output value (there is no random component in the hash function)Different inputs may produce the same output (hash collision, very low probability)Hashing of hash function: the hash function sho ...

The so-called sorting is the operation of arranging a string of records in ascending or descending order according to the size of one or some keywords. Sorting algorithm is how to arrange records according to requirements. There are roughly eight commonly used sorting algorithms: insertion sort (direct insertion sort, Hill sort), selection sort ...

Byte beat favorite 64 algorithm questions (JS version) April 12 The following article is from the Tuque community. The author is a Tuque Tuque community Collect wonderful practical tutorials, pay attention to the reply "communication", pull you into the learning and communication group, and grow together with small partners who ...

Topic background Yyy2015c01 quickly solved the problem, was praised by the neighbors, happily returned home, gave the sugar to my mother, had a delicious lunch and took a sweet nap. I feel that life is really beautiful. In the afternoon, my father came home and heard that yyy2015c01 had helped the teacher and neighbors solve their problems. He ...

1. Convert degrees Celsius to degrees FahrenheitThe conversion from Celsius to Fahrenheit is calculated by multiplying Celsius by 9 / 5 and then adding 32Input: convertToF(0) should return a numberInput: - 30Output: - 22Where celsius stands for celsius and fahrenheit for fahrenheitSolution:function convertToF(celsius) { let fahrenheit; fahr ...

Please implement two functions to serialize and deserialize the binary tree respectively. You need to design an algorithm to realize the serialization and deserialization of binary tree. There is no restriction on the execution logic of your sequence / deserialization algorithm. You only need to ensure that a binary tree can be serialized into ...

Title Description & Links Leetcode 907 : given an array, find the minimum values of all subarrays and return the sum of all minimum values Topic idea 1. Enumeration of violence The intuitive idea is to enumerate all subarrays through violence and find the sum of the minimum values of all subarrays, because the topic subarray refers to c ...

Grammar analysis JavaCC generates a top-down parser that does not support left recursion and recursive descent. The advantage of this parser is that the syntax is easy to understand and easy to debug. Attributes can be passed up and down in the syntax parsing tree, and can also be called between branches. As shown in the figure: Left recurs ...

Note: all the data used in my test are of the type that can be compared in size without duplicate elements, and the sorting is in ascending order. In fact, the idea of fast sorting is very similar to bubble sorting. Bubble sorting is to complete the sorting through the continuous exchange between two adjacent elements. I think fast sorting ...

Learning from: https://labuladong.gitee.io/algo/3/25/85/ 1, 0-1 knapsack problem Give you a backpack with a weight of W and N items. Each item has two attributes: weight and value. Among them, the weight of the ith item is wt[i], and the value is val[i]. Now, what is the maximum value of the item you can pack with this back? It should be n ...