SlideShare a Scribd company logo
Hash function
Hup university
21-02-2018
Hash Function
• A hash function is any function that can be
used to map data of arbitrary size to data of
fixed size
values returned by a hash
function are hash values, hash
codes, digests, or hashes.
detecting duplicated records
Specifically,
the hash
function is
used to
map the
search key
to a list;
the index
gives the
place in
the hash
table
where the
correspond
ing record
should be
stored.
Hash Table to
quickly locate a data
record dictionary
Search Key
1
2
3

More Related Content

More from zahraa F.Muhsen

Computer skills excel2010 data
Computer skills excel2010 dataComputer skills excel2010 data
Computer skills excel2010 data
zahraa F.Muhsen
 
Computer skills excel2010 2
Computer skills excel2010 2Computer skills excel2010 2
Computer skills excel2010 2
zahraa F.Muhsen
 
Computer skills excel2010
Computer skills excel2010Computer skills excel2010
Computer skills excel2010
zahraa F.Muhsen
 
Computer skills excel2010 3
Computer skills excel2010 3Computer skills excel2010 3
Computer skills excel2010 3
zahraa F.Muhsen
 
Computer skills excel2010-4
Computer skills excel2010-4Computer skills excel2010-4
Computer skills excel2010-4
zahraa F.Muhsen
 
Computer skills excel2010
Computer skills excel2010Computer skills excel2010
Computer skills excel2010
zahraa F.Muhsen
 
Genetic algorithms
Genetic algorithmsGenetic algorithms
Genetic algorithms
zahraa F.Muhsen
 
Internet search techniques
Internet search techniquesInternet search techniques
Internet search techniques
zahraa F.Muhsen
 
Nearest neighbor search
Nearest neighbor searchNearest neighbor search
Nearest neighbor search
zahraa F.Muhsen
 
Search methods
Search methodsSearch methods
Search methods
zahraa F.Muhsen
 
Pigeonhole sort
Pigeonhole sortPigeonhole sort
Pigeonhole sort
zahraa F.Muhsen
 
Gnome sort
Gnome sortGnome sort
Gnome sort
zahraa F.Muhsen
 
Puzzle (1000 coins and 10 bags)
Puzzle (1000 coins and 10 bags)Puzzle (1000 coins and 10 bags)
Puzzle (1000 coins and 10 bags)
zahraa F.Muhsen
 
Php1
Php1Php1
Binary tree
Binary treeBinary tree
Binary tree
zahraa F.Muhsen
 
Selection sort
Selection sortSelection sort
Selection sort
zahraa F.Muhsen
 
Puzzle the neighbor
Puzzle the neighborPuzzle the neighbor
Puzzle the neighbor
zahraa F.Muhsen
 
Merge sort
Merge sortMerge sort
Merge sort
zahraa F.Muhsen
 
Puzzle fastest 3 horses
Puzzle fastest 3 horsesPuzzle fastest 3 horses
Puzzle fastest 3 horses
zahraa F.Muhsen
 
Counting sort
Counting sortCounting sort
Counting sort
zahraa F.Muhsen
 

More from zahraa F.Muhsen (20)

Computer skills excel2010 data
Computer skills excel2010 dataComputer skills excel2010 data
Computer skills excel2010 data
 
Computer skills excel2010 2
Computer skills excel2010 2Computer skills excel2010 2
Computer skills excel2010 2
 
Computer skills excel2010
Computer skills excel2010Computer skills excel2010
Computer skills excel2010
 
Computer skills excel2010 3
Computer skills excel2010 3Computer skills excel2010 3
Computer skills excel2010 3
 
Computer skills excel2010-4
Computer skills excel2010-4Computer skills excel2010-4
Computer skills excel2010-4
 
Computer skills excel2010
Computer skills excel2010Computer skills excel2010
Computer skills excel2010
 
Genetic algorithms
Genetic algorithmsGenetic algorithms
Genetic algorithms
 
Internet search techniques
Internet search techniquesInternet search techniques
Internet search techniques
 
Nearest neighbor search
Nearest neighbor searchNearest neighbor search
Nearest neighbor search
 
Search methods
Search methodsSearch methods
Search methods
 
Pigeonhole sort
Pigeonhole sortPigeonhole sort
Pigeonhole sort
 
Gnome sort
Gnome sortGnome sort
Gnome sort
 
Puzzle (1000 coins and 10 bags)
Puzzle (1000 coins and 10 bags)Puzzle (1000 coins and 10 bags)
Puzzle (1000 coins and 10 bags)
 
Php1
Php1Php1
Php1
 
Binary tree
Binary treeBinary tree
Binary tree
 
Selection sort
Selection sortSelection sort
Selection sort
 
Puzzle the neighbor
Puzzle the neighborPuzzle the neighbor
Puzzle the neighbor
 
Merge sort
Merge sortMerge sort
Merge sort
 
Puzzle fastest 3 horses
Puzzle fastest 3 horsesPuzzle fastest 3 horses
Puzzle fastest 3 horses
 
Counting sort
Counting sortCounting sort
Counting sort
 

Recently uploaded

06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Dat...
06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Dat...06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Dat...
06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Dat...
Timothy Spann
 
Everything you wanted to know about LIHTC
Everything you wanted to know about LIHTCEverything you wanted to know about LIHTC
Everything you wanted to know about LIHTC
Roger Valdez
 
Predictably Improve Your B2B Tech Company's Performance by Leveraging Data
Predictably Improve Your B2B Tech Company's Performance by Leveraging DataPredictably Improve Your B2B Tech Company's Performance by Leveraging Data
Predictably Improve Your B2B Tech Company's Performance by Leveraging Data
Kiwi Creative
 
The Building Blocks of QuestDB, a Time Series Database
The Building Blocks of QuestDB, a Time Series DatabaseThe Building Blocks of QuestDB, a Time Series Database
The Building Blocks of QuestDB, a Time Series Database
javier ramirez
 
一比一原版(爱大毕业证书)爱丁堡大学毕业证如何办理
一比一原版(爱大毕业证书)爱丁堡大学毕业证如何办理一比一原版(爱大毕业证书)爱丁堡大学毕业证如何办理
一比一原版(爱大毕业证书)爱丁堡大学毕业证如何办理
g4dpvqap0
 
一比一原版(Harvard毕业证书)哈佛大学毕业证如何办理
一比一原版(Harvard毕业证书)哈佛大学毕业证如何办理一比一原版(Harvard毕业证书)哈佛大学毕业证如何办理
一比一原版(Harvard毕业证书)哈佛大学毕业证如何办理
zsjl4mimo
 
办(uts毕业证书)悉尼科技大学毕业证学历证书原版一模一样
办(uts毕业证书)悉尼科技大学毕业证学历证书原版一模一样办(uts毕业证书)悉尼科技大学毕业证学历证书原版一模一样
办(uts毕业证书)悉尼科技大学毕业证学历证书原版一模一样
apvysm8
 
Population Growth in Bataan: The effects of population growth around rural pl...
Population Growth in Bataan: The effects of population growth around rural pl...Population Growth in Bataan: The effects of population growth around rural pl...
Population Growth in Bataan: The effects of population growth around rural pl...
Bill641377
 
Experts live - Improving user adoption with AI
Experts live - Improving user adoption with AIExperts live - Improving user adoption with AI
Experts live - Improving user adoption with AI
jitskeb
 
Beyond the Basics of A/B Tests: Highly Innovative Experimentation Tactics You...
Beyond the Basics of A/B Tests: Highly Innovative Experimentation Tactics You...Beyond the Basics of A/B Tests: Highly Innovative Experimentation Tactics You...
Beyond the Basics of A/B Tests: Highly Innovative Experimentation Tactics You...
Aggregage
 
一比一原版(UO毕业证)渥太华大学毕业证如何办理
一比一原版(UO毕业证)渥太华大学毕业证如何办理一比一原版(UO毕业证)渥太华大学毕业证如何办理
一比一原版(UO毕业证)渥太华大学毕业证如何办理
aqzctr7x
 
The Ipsos - AI - Monitor 2024 Report.pdf
The  Ipsos - AI - Monitor 2024 Report.pdfThe  Ipsos - AI - Monitor 2024 Report.pdf
The Ipsos - AI - Monitor 2024 Report.pdf
Social Samosa
 
一比一原版(Coventry毕业证书)考文垂大学毕业证如何办理
一比一原版(Coventry毕业证书)考文垂大学毕业证如何办理一比一原版(Coventry毕业证书)考文垂大学毕业证如何办理
一比一原版(Coventry毕业证书)考文垂大学毕业证如何办理
74nqk8xf
 
My burning issue is homelessness K.C.M.O.
My burning issue is homelessness K.C.M.O.My burning issue is homelessness K.C.M.O.
My burning issue is homelessness K.C.M.O.
rwarrenll
 
End-to-end pipeline agility - Berlin Buzzwords 2024
End-to-end pipeline agility - Berlin Buzzwords 2024End-to-end pipeline agility - Berlin Buzzwords 2024
End-to-end pipeline agility - Berlin Buzzwords 2024
Lars Albertsson
 
4th Modern Marketing Reckoner by MMA Global India & Group M: 60+ experts on W...
4th Modern Marketing Reckoner by MMA Global India & Group M: 60+ experts on W...4th Modern Marketing Reckoner by MMA Global India & Group M: 60+ experts on W...
4th Modern Marketing Reckoner by MMA Global India & Group M: 60+ experts on W...
Social Samosa
 
一比一原版(UCSB文凭证书)圣芭芭拉分校毕业证如何办理
一比一原版(UCSB文凭证书)圣芭芭拉分校毕业证如何办理一比一原版(UCSB文凭证书)圣芭芭拉分校毕业证如何办理
一比一原版(UCSB文凭证书)圣芭芭拉分校毕业证如何办理
nuttdpt
 
在线办理(英国UCA毕业证书)创意艺术大学毕业证在读证明一模一样
在线办理(英国UCA毕业证书)创意艺术大学毕业证在读证明一模一样在线办理(英国UCA毕业证书)创意艺术大学毕业证在读证明一模一样
在线办理(英国UCA毕业证书)创意艺术大学毕业证在读证明一模一样
v7oacc3l
 
ViewShift: Hassle-free Dynamic Policy Enforcement for Every Data Lake
ViewShift: Hassle-free Dynamic Policy Enforcement for Every Data LakeViewShift: Hassle-free Dynamic Policy Enforcement for Every Data Lake
ViewShift: Hassle-free Dynamic Policy Enforcement for Every Data Lake
Walaa Eldin Moustafa
 
Influence of Marketing Strategy and Market Competition on Business Plan
Influence of Marketing Strategy and Market Competition on Business PlanInfluence of Marketing Strategy and Market Competition on Business Plan
Influence of Marketing Strategy and Market Competition on Business Plan
jerlynmaetalle
 

Recently uploaded (20)

06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Dat...
06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Dat...06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Dat...
06-04-2024 - NYC Tech Week - Discussion on Vector Databases, Unstructured Dat...
 
Everything you wanted to know about LIHTC
Everything you wanted to know about LIHTCEverything you wanted to know about LIHTC
Everything you wanted to know about LIHTC
 
Predictably Improve Your B2B Tech Company's Performance by Leveraging Data
Predictably Improve Your B2B Tech Company's Performance by Leveraging DataPredictably Improve Your B2B Tech Company's Performance by Leveraging Data
Predictably Improve Your B2B Tech Company's Performance by Leveraging Data
 
The Building Blocks of QuestDB, a Time Series Database
The Building Blocks of QuestDB, a Time Series DatabaseThe Building Blocks of QuestDB, a Time Series Database
The Building Blocks of QuestDB, a Time Series Database
 
一比一原版(爱大毕业证书)爱丁堡大学毕业证如何办理
一比一原版(爱大毕业证书)爱丁堡大学毕业证如何办理一比一原版(爱大毕业证书)爱丁堡大学毕业证如何办理
一比一原版(爱大毕业证书)爱丁堡大学毕业证如何办理
 
一比一原版(Harvard毕业证书)哈佛大学毕业证如何办理
一比一原版(Harvard毕业证书)哈佛大学毕业证如何办理一比一原版(Harvard毕业证书)哈佛大学毕业证如何办理
一比一原版(Harvard毕业证书)哈佛大学毕业证如何办理
 
办(uts毕业证书)悉尼科技大学毕业证学历证书原版一模一样
办(uts毕业证书)悉尼科技大学毕业证学历证书原版一模一样办(uts毕业证书)悉尼科技大学毕业证学历证书原版一模一样
办(uts毕业证书)悉尼科技大学毕业证学历证书原版一模一样
 
Population Growth in Bataan: The effects of population growth around rural pl...
Population Growth in Bataan: The effects of population growth around rural pl...Population Growth in Bataan: The effects of population growth around rural pl...
Population Growth in Bataan: The effects of population growth around rural pl...
 
Experts live - Improving user adoption with AI
Experts live - Improving user adoption with AIExperts live - Improving user adoption with AI
Experts live - Improving user adoption with AI
 
Beyond the Basics of A/B Tests: Highly Innovative Experimentation Tactics You...
Beyond the Basics of A/B Tests: Highly Innovative Experimentation Tactics You...Beyond the Basics of A/B Tests: Highly Innovative Experimentation Tactics You...
Beyond the Basics of A/B Tests: Highly Innovative Experimentation Tactics You...
 
一比一原版(UO毕业证)渥太华大学毕业证如何办理
一比一原版(UO毕业证)渥太华大学毕业证如何办理一比一原版(UO毕业证)渥太华大学毕业证如何办理
一比一原版(UO毕业证)渥太华大学毕业证如何办理
 
The Ipsos - AI - Monitor 2024 Report.pdf
The  Ipsos - AI - Monitor 2024 Report.pdfThe  Ipsos - AI - Monitor 2024 Report.pdf
The Ipsos - AI - Monitor 2024 Report.pdf
 
一比一原版(Coventry毕业证书)考文垂大学毕业证如何办理
一比一原版(Coventry毕业证书)考文垂大学毕业证如何办理一比一原版(Coventry毕业证书)考文垂大学毕业证如何办理
一比一原版(Coventry毕业证书)考文垂大学毕业证如何办理
 
My burning issue is homelessness K.C.M.O.
My burning issue is homelessness K.C.M.O.My burning issue is homelessness K.C.M.O.
My burning issue is homelessness K.C.M.O.
 
End-to-end pipeline agility - Berlin Buzzwords 2024
End-to-end pipeline agility - Berlin Buzzwords 2024End-to-end pipeline agility - Berlin Buzzwords 2024
End-to-end pipeline agility - Berlin Buzzwords 2024
 
4th Modern Marketing Reckoner by MMA Global India & Group M: 60+ experts on W...
4th Modern Marketing Reckoner by MMA Global India & Group M: 60+ experts on W...4th Modern Marketing Reckoner by MMA Global India & Group M: 60+ experts on W...
4th Modern Marketing Reckoner by MMA Global India & Group M: 60+ experts on W...
 
一比一原版(UCSB文凭证书)圣芭芭拉分校毕业证如何办理
一比一原版(UCSB文凭证书)圣芭芭拉分校毕业证如何办理一比一原版(UCSB文凭证书)圣芭芭拉分校毕业证如何办理
一比一原版(UCSB文凭证书)圣芭芭拉分校毕业证如何办理
 
在线办理(英国UCA毕业证书)创意艺术大学毕业证在读证明一模一样
在线办理(英国UCA毕业证书)创意艺术大学毕业证在读证明一模一样在线办理(英国UCA毕业证书)创意艺术大学毕业证在读证明一模一样
在线办理(英国UCA毕业证书)创意艺术大学毕业证在读证明一模一样
 
ViewShift: Hassle-free Dynamic Policy Enforcement for Every Data Lake
ViewShift: Hassle-free Dynamic Policy Enforcement for Every Data LakeViewShift: Hassle-free Dynamic Policy Enforcement for Every Data Lake
ViewShift: Hassle-free Dynamic Policy Enforcement for Every Data Lake
 
Influence of Marketing Strategy and Market Competition on Business Plan
Influence of Marketing Strategy and Market Competition on Business PlanInfluence of Marketing Strategy and Market Competition on Business Plan
Influence of Marketing Strategy and Market Competition on Business Plan
 

Hash function

  • 2. Hash Function • A hash function is any function that can be used to map data of arbitrary size to data of fixed size values returned by a hash function are hash values, hash codes, digests, or hashes. detecting duplicated records
  • 3. Specifically, the hash function is used to map the search key to a list; the index gives the place in the hash table where the correspond ing record should be stored. Hash Table to quickly locate a data record dictionary Search Key 1 2 3