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Tag: bitset
＜C++＞ STL_bitset usage and simulation implementation
Introduction to bitset Introduction of bitmaps Given 4 billion unique unsigned integers, not sorted. Given an unsigned integer, how to quickly determine whether a number is among these 4 billion numbers? To determine whether a number is in a certain pile of numbers, we may think of the following method: Sort this pile of numbers, […]
[High-order data structure] Application of hash {bitmap; std::bitset; application of bitmap; Bloom filter; application of Bloom filter}
1. Bitmap 1.1 Bitmap Concept Interview questions Given 4 billion unique unsigned integers, not sorted. Given an unsigned integer, how to quickly determine whether a number is among these 4 billion numbers. 【Tencent】 Traversal search: 4 billion integers cannot be stored in memory (approximately 15-16G of memory); time complexity O(N); Sort first O(NlogN), and then […]
Bitmap bitset and its application–[C++ implementation]
Code gitee repository for this chapter: bitmap implementation and its application Article directory 1. The concept of bitmap 2. Implementation of bitmap 3. Bitmap application 1. The concept of bitmap When faced with massive amounts of data, our general data structures cannot store so many values. To analyze this data, we can use bitmaps to […]
STL container list, vector, stack, bitset, set, multiset instance demo
1, list //The two text files contain the college entrance examination results of a middle school, including the admission ticket number, name, university name, and total score information. //However, due to some reasons, there may be duplicate records in the two files. It is now required to merge the contents of the two files together, […]
Golang bitset basic use, Bloom filter
Install: go get github.com/bits-and-blooms/bitset The following code replaces fmtx with fmt //————Basic operation———— //Construct a 64bit length bitset b := bitset. New(64) //put a number b. Set(10) fmtx.Println(“add-10:”, b.DumpAsBits()) // 0000000000000000000000000000000000000000000000000000010000000000 // delete a value b. Set(12) b. Clear(10) fmtx.Println(“del-10:”, b.DumpAsBits()) //0000000000000000000000000000000000000000000000000001000000000000 \t//test b. Set(2). Set(6) fmtx.Println(“add-2-6:”, b.DumpAsBits()) //0000000000000000000000000000000000000000000000000001000001000100 fmtx.Println(“test2:”, b.Test(2), “test5:”, b.Test(5)) //[test2: true […]
STL bitmap (bitset)
Table of Contents bitmap bitset introduction bitset uses Simulation implementation Application of bitmap – topic Summarize Bitmap bitset introduction Reference document: bitset In C++ STL, std::bitset is a fixed-size container class used to represent a sequence of binary bits. It can be seen as a Boolean array of fixed length N, where each element has […]
c++11 standard template (STL) (std::bitset) (6)
Defined in the header file <bitset> template class bitset; The class template bitset represents a fixed-size sequence of N bits. Bitsets can be manipulated and converted to and from strings and integers using standard logical operators. bitset meets the requirements of CopyConstructible and CopyAssignable. Template parameter N – Number of bits to allocate storage for […]
c++11 standard template (STL) (std::bitset) (4)
Defined in the header file <bitset> template class bitset; The class template bitset represents a fixed-size sequence of N bits. Bitsets can be manipulated and converted to and from strings and integers using standard logical operators. bitset meets the requirements of CopyConstructible and CopyAssignable. Template parameter N – Number of bits to allocate storage for […]
c++11 standard template (STL) (std::bitset) (3)
Defined in the header file <bitset> template class bitset; The class template bitset represents a fixed-size sequence of N bits. Bitsets can be manipulated and converted to and from strings and integers using standard logical operators. bitset meets the requirements of CopyConstructible and CopyAssignable. Template parameter N – Number of bits to allocate storage for […]