Lub Algorithm Compression ZIP yog dab tsi?

ZIP Compression Algorithm yog ib qho cuab yeej tseem ceeb hauv kev suav hauv ntiaj teb uas tso cai rau koj los txo qhov loj ntawm cov ntaub ntawv thiab cov npe kom txuag tau qhov chaw cia thiab pab txhawb lawv cov kev hloov pauv los ntawm kev siv hluav taws xob. Tsim los ntawm Phil Katz hauv xyoo 1989, qhov kev ua haujlwm no siv kev sib xyaw ua ke ntawm compression thiab encryption txoj hauv kev kom ua tiav kev ua haujlwm siab hauv cov ntaub ntawv loj. Hauv tsab xov xwm no, peb yuav tshawb txog qhov tob npaum li cas qhov algorithm no ua haujlwm, nws cov yam ntxwv tseem ceeb thiab nws cov kev siv hauv kev siv thev naus laus zis.

1. Taw qhia rau ZIP Compression Algorithm

ZIP compression algorithm yog dav siv los txo cov ntaub ntawv loj thiab ua kom yooj yim rau kev hloov lossis khaws cia. Qhov algorithm no siv kev sib xyaw ua ke ntawm compression thiab encryption cov tswv yim kom ua tiav tus nqi compression siab yam tsis tau poob cov ntaub ntawv ncaj ncees.

ZIP compression ua haujlwm los ntawm kev faib cov ntaub ntawv rau hauv cov blocks me me thiab siv cov txheej txheem compression lossless rau txhua qhov thaiv. Cov algorithms no saib rau redundancies nyob rau hauv cov ntaub ntawv thiab tshem tawm lawv kom txo tau qhov loj ntawm cov ntaub ntawv. Tsis tas li ntawd, phau ntawv txhais lus yog siv los khaws cov ntaub ntawv hais txog cov qauv rov ua dua hauv cov ntaub ntawv, uas tso cai rau kev ua kom zoo dua.

Kev tshem tawm kev nias los ntawm ib daim ntawv ZIP yog cov txheej txheem thim rov qab, uas cov ntaub ntawv qub tau rov qab los ntawm cov ntaub ntawv compressed. Cov txheej txheem no suav nrog thim rov qab compression algorithms siv thaum lub sijhawm compression, siv phau ntawv txhais lus khaws cia kom rov qab tau cov qauv ntaub ntawv qub. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias ZIP compression yog lossless compression, txhais tau tias tsis muaj ntaub ntawv ploj thaum lub sij hawm compression thiab decompression txheej txheem.

2. ZIP Compression Algorithm ua haujlwm li cas

ZIP compression algorithm yog dav siv los txo cov ntaub ntawv loj thiab pab kev thauj mus los thiab khaws cia. Hauv qab no, kev ua haujlwm ntawm qhov algorithm no yuav qhia meej hauv peb kauj ruam tseem ceeb.

1. Cov ntaub ntawv compression: Thawj kauj ruam siv ZIP compression algorithm yog xaiv cov ntaub ntawv koj xav kom compress. Cov no tuaj yeem yog cov ntaub ntawv, duab, yeeb yaj kiab lossis lwm hom ntaub ntawv. Thaum xaiv, ZIP-tshaj software yog siv los nthuav cov ntaub ntawv. Thaum lub sij hawm tus txheej txheem no, lub algorithm saib rau cov ntaub ntawv rov qab qauv thiab hloov lawv nrog luv luv references, uas ua rau ib tug me me compressed ntaub ntawv.

2. ZIP cov ntaub ntawv qauv: Thaum cov ntaub ntawv tau raug compressed, ZIP cov ntaub ntawv nrog cov qauv tshwj xeeb yuav raug tsim. Cov ntaub ntawv zip no muaj ntau qhov kev nkag, qhov twg txhua qhov nkag sawv cev rau tus kheej cov ntaub ntawv hauv ZIP cov ntaub ntawv. Tsis tas li ntawd, ZIP cov ntaub ntawv muaj ib lub taub hau uas khaws cov ntaub ntawv hais txog kev nkag, xws li cov ntaub ntawv npe, txoj kev, thiab compressed thiab uncompressed loj.

3. Cov ntaub ntawv decompression: Cov kauj ruam kawg yog decompression ntawm cov ntaub ntawv. Txhawm rau decompress ib ZIP cov ntaub ntawv, siv software sib xws uas rov tsim cov ntaub ntawv qub los ntawm cov ntawv nkag thiab cov ntaub ntawv khaws cia hauv header ntawm ZIP cov ntaub ntawv. Thaum lub sij hawm tus txheej txheem no, lub algorithm thim rov qab cov kev khiav hauj lwm ua thaum lub sij hawm compression, rov kho cov ntaub ntawv mus rau nws thawj daim ntawv. Thaum cov ntaub ntawv tau unzipped, lawv tuaj yeem siv tau li qub.

Hauv cov ntsiab lus, ZIP compression algorithm ua haujlwm los ntawm kev xaiv thiab compressing cov ntaub ntawv, tsim ib ZIP cov ntaub ntawv qauv, thiab tom qab ntawd decompressing cov ntaub ntawv. cov ntaub ntawv compressed. Cov txheej txheem no tso cai rau koj txo qhov loj ntawm cov ntaub ntawv thiab pab txhawb lawv txoj kev thauj mus los thiab khaws cia. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias muaj ntau yam software muaj los ua haujlwm nrog ZIP cov ntaub ntawv, uas muab kev yoog raws thiab sib haum nrog cov operating system sib txawv.

3. Cov hauv paus ntsiab lus ntawm ZIP Compression Algorithm

ZIP Compression Algorithm yog ua raws li ntau lub hauv paus ntsiab lus uas tso cai rau cov ntaub ntawv ntau thiab tsawg kom txo tau thiab yooj yim rau khaws thiab hloov. Cov ntsiab cai no yog qhov tseem ceeb rau kev nkag siab tias qhov algorithm no ua haujlwm li cas thiab siv nws li cas. zoo.

Ua ntej, lub algorithm siv cov txheej txheem compression hu ua "deflation." Cov txheej txheem no compresses cov ntaub ntawv los ntawm kev txheeb xyuas thiab tshem tawm redundancies nyob rau hauv thawj cov ntaub ntawv. Nws yog raws li lub tswv yim tias ntau cov ntaub ntawv muaj cov ntaub ntawv rov ua dua thiab cov qauv kev kwv yees uas tuaj yeem raug tshem tawm yam tsis tau poob cov ntaub ntawv. Deflation yog ua nyob rau hauv ob kauj ruam: compression thiab decompression. Thaum lub sij hawm compression, rov ua ntu zus tau tshawb nrhiav thiab hloov los ntawm kev xa mus rau cov kab ke yav dhau los. Thaum lub sij hawm decompression, cov thawj sequences yog regenerated los ntawm cov neeg siv.

Lwm lub hauv paus ntsiab lus ntawm lub algorithm yog kev siv cov ntaub ntawv qauv hu ua "Huffman ntoo." Cov ntoo no muab cov lej luv luv rau cov cim nquag thiab cov lej ntev dua rau cov cim tsis tshua muaj. Ua li no, qhov loj ntawm cov ntaub ntawv compressed yog txo los ntawm kev muab cov khoom tsawg dua rau cov cim feem ntau. Huffman ntoo yog tsim los ntawm kev tsom xam ntawm qhov zaus ntawm cov tsos ntawm txhua lub cim hauv cov ntaub ntawv qub.

4. Cov yam ntxwv tseem ceeb ntawm ZIP Compression Algorithm

ZIP Compression Algorithm yog dav siv los txo cov ntaub ntawv loj thiab pab txhawb kev hloov ntaub ntawv thiab khaws cia. Hauv qab no yog qee qhov tseem ceeb ntawm cov algorithm no:

1. Poob compression: ZIP compression algorithm siv cov txheej txheem lossless compression, uas txhais tau hais tias tsis muaj ntaub ntawv ploj thaum lub sij hawm compression thiab decompression txheej txheem. Qhov no ua kom ntseeg tau tias cov ntaub ntawv rov qab tau zoo ib yam li cov thawj coj.

2. Ntau cov ntaub ntawv compression: Ib qho tseem ceeb tshaj plaws ntawm ZIP hom yog nws lub peev xwm los nthuav ntau cov ntaub ntawv rau hauv ib qho ntaub ntawv compressed. Qhov no yog qhov tshwj xeeb tshaj yog thaum koj xav tau xa ntau cov ntaub ntawv hauv Is Taws Nem, vim nws txo cov pob ntawv tag nrho.

3. ZIP file structure: ZIP cov ntaub ntawv yog tsim los ntawm ntau qhov chaw uas muaj kev sib txuas nrog ib leeg. Cov ntu no suav nrog Central Header, uas muaj cov ntaub ntawv hais txog cov ntaub ntawv compressed, thiab cov ntaub ntawv compressed lawv tus kheej. Cov qauv no tso cai rau kev yooj yim navigation thiab rho tawm ntawm tus kheej cov ntaub ntawv tsis tas yuav unzip tag nrho cov ntaub ntawv.

Hauv kev xaus, ZIP Compression Algorithm yog cov cuab yeej tseem ceeb uas muaj cov yam ntxwv tseem ceeb xws li tsis muaj compression, muaj peev xwm los nthuav ntau cov ntaub ntawv, thiab nws cov txheej txheem cov ntaub ntawv. Qhov no ua rau nws yog qhov kev xaiv nrov rau compressing thiab ntim cov ntaub ntawv, ua rau lawv yooj yim rau kev thauj thiab khaws cia.

5. Qhov zoo thiab qhov tsis zoo ntawm ZIP Compression Algorithm

ZIP compression algorithm yog dav siv rau compress cov ntaub ntawv thiab txo nws qhov loj me, ua rau ntau qhov zoo thiab qhov tsis zoo. Hauv qab no yog qee qhov ntawm lawv:

Cov txiaj ntsig:
1. Cov ntaub ntawv loj txo: ZIP algorithm tuaj yeem nthuav cov ntaub ntawv mus rau qhov loj me me. Qhov no yog tshwj xeeb tshaj yog muaj txiaj ntsig thaum cuam tshuam nrog cov ntaub ntawv loj lossis thaum xa cov ntaub ntawv ntawm email, vim nws txo lub sijhawm hloov mus.
2. Preserving folder structure: ZIP khaws cov qauv nplaub tshev zoo tom qab compression, ua kom yooj yim rau kev teeb tsa thiab rho tawm ntawm cov ntaub ntawv compressed. Qhov no yog tshwj xeeb tshaj yog pab tau thaum soj ntsuam nrog tej yaam num uas muaj ib tug complex directory hierarchy.
3. Kev sib xws ntawm ntau lub platform: Compressed cov ntaub ntawv nyob rau hauv ZIP hom yog sib xws nrog feem ntau operating systems, tso cai rau koj mus qhia thiab decompress cov ntaub ntawv rau cov khoom siv sib txawv thiab platforms. Qhov no versatility ua rau ZIP compression algorithm dav siv.

Qhov Tsis Zoo:
1. Kev poob zoo: Qee zaum, thaum compressing cov ntaub ntawv tawm xws li cov duab lossis yeeb yaj kiab, kev poob zoo yuav tshwm sim. Qhov no yog vim qhov compression algorithm yog tsim los tshem tawm cov ntaub ntawv rov ua dua lossis rov ua dua, uas tuaj yeem cuam tshuam qhov zoo ntawm qee hom ntaub ntawv.
2. Kev vam khom ntawm software: Txhawm rau decompress ZIP cov ntaub ntawv, koj yuav tsum muaj cov software sib xws hauv koj lub cev. Txawm hais tias qhov no feem ntau pom muaj nyob rau hauv feem ntau cov kev khiav hauj lwm systems, nws tuaj yeem yog qhov txwv yog tias koj xav qhib cov ntaub ntawv ntawm lub cuab yeej lossis lub platform uas tsis muaj ZIP kev txhawb nqa.
3. Ntxiv ib ntus cia: Thaum unzipping ZIP cov ntaub ntawv, koj yuav tsum muaj qhov chaw cia ib ntus txaus kom rho tawm tag nrho cov ntaub ntawv muaj nyob hauv nws. Yog tias qhov chaw disk tsawg, qhov no tuaj yeem ua teeb meem, tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv loj compressed.

Hauv cov ntsiab lus, ZIP compression algorithm muaj qhov zoo xws li kev txo cov ntaub ntawv loj, khaws cov ntaub ntawv khaws cia, thiab kev sib koom ua ke ntawm kev sib koom ua ke. Txawm li cas los xij, nws kuj muaj qhov tsis zoo xws li qhov ua tau zoo poob, software dependency, thiab xav tau qhov chaw cia ntxiv thaum decompressing cov ntaub ntawv.

6. Sib piv nrog lwm cov compression algorithms

Txhawm rau ntsuas qhov ua tau zoo thiab kev ua haujlwm ntawm cov ntawv thov compression algorithm, nws yog ib qho tseem ceeb uas yuav tsum tau ua kom siv dav hauv kev lag luam. Kev sib piv yuav tau ua nyob rau hauv ntau yam tseem ceeb, xws li compression ceev, compression ratio thiab qhov zoo ntawm compression tshwm sim.

Ntawm qhov zoo tshaj plaws-paub compression algorithms yog ZIP algorithm thiab GZIP algorithm. Cov algorithms no tau siv dav vim lawv muaj peev xwm compress thiab decompress ua tau zoo tus kheej cov ntaub ntawv lossis cov ntaub ntawv teev tseg. Nws compression ceev thiab compression piv yog heev muaj nuj nqis nyob rau hauv daim ntawv thov uas yuav tsum tau xa los yog cia ntawm loj ntim ntawm cov ntaub ntawv.

Hauv kev sib piv, kev ntsuam xyuas yuav ua rau ntau hom ntaub ntawv, los ntawm cov ntawv nyeem rau cov duab lossis yeeb yaj kiab, thiab cov txiaj ntsig tau txais yuav raug tshuaj xyuas. Lub sij hawm yuav tsum tau rau compress thiab decompress txhua cov ntaub ntawv yuav raug soj ntsuam, nrog rau qhov tshwm sim loj tom qab compression. Tsis tas li ntawd, qhov zoo ntawm cov ntaub ntawv decompressed yuav raug soj ntsuam, muab piv rau qhov tseeb ntawm cov ntsiab lus qub nrog cov ntsiab lus ntawm cov ntaub ntawv decompressed.

7. Kev siv thiab kev siv ntawm ZIP Compression Algorithm

ZIP compression algorithm yog siv dav hauv ntau lub lag luam vim nws ntau daim ntawv thov thiab cov txiaj ntsig. Hauv tsab xov xwm no, peb yuav tshawb nrhiav kev siv cov algorithm no thiab yuav ua li cas nws thiaj li siv tau zoo hauv ntau qhov xwm txheej.

Ib qho ntawm cov ntawv thov tseem ceeb ntawm ZIP compression algorithm yog txo cov ntaub ntawv loj. Los ntawm compressing cov ntaub ntawv thiab folders rau hauv ZIP archive, nws muaj peev xwm txo tau lawv qhov loj me, ua rau lawv yooj yim rau khaws thiab hloov. Qhov no compression muaj peev xwm yog tshwj xeeb tshaj yog pab tau thaum xa cov ntaub ntawv ntawm email los yog thaub qab cov ntaub ntawv mus rau ib tug txwv cia ntaus ntawv.

Lwm daim ntawv thov ntawm ZIP compression algorithm yog tsim cov ntaub ntawv ZIP encrypted. Qhov no muab ib txheej ntxiv ntawm kev ruaj ntseg los ntawm kev tiv thaiv cov ntsiab lus ntawm cov ntaub ntawv nrog tus password. Txoj kev no, tsuas yog cov neeg tau txais kev tso cai yuav nkag mus rau cov ntsiab lus, uas yog qhov tshwj xeeb tshaj yog thaum xa cov ntaub ntawv rhiab lossis tsis pub lwm tus paub. Tsis tas li ntawd, ZIP compression algorithm kuj tso cai rau kev sib cais cov ntaub ntawv loj rau hauv ob peb cov ntaub ntawv me me, ua rau lawv yooj yim los tuav thiab thauj.

8. Kev siv ZIP Compression Algorithm hauv software

Nws tuaj yeem ua tiav siv cov cuab yeej sib txawv thiab thev naus laus zis. Hauv qab no yog cov kauj ruam tsim nyog los ua qhov kev siv no:

1. Kev xaiv cuab yeej: Nws yog ib qho tseem ceeb uas yuav tau xaiv cov cuab yeej ZIP compression uas haum rau qhov yuav tsum tau ua ntawm qhov project. Qee qhov kev xaiv nrov suav nrog WinZIP, 7-Zip, thiab WinRAR. Cov cuab yeej zoo li no muaj ntau yam haujlwm thiab nta, xws li cov ntaub ntawv compression, encryption, thiab kev xaiv cais.

2. Rub tawm thiab teeb tsa: Thaum lub cuab yeej raug xaiv, koj yuav tsum mus download tau nws thiab nruab rau hauv lub system. Qhov no feem ntau yog mus xyuas lub cuab yeej lub vev xaib thiab ua raws li cov lus qhia rub tawm thiab teeb tsa.

3. Kev siv lub cuab yeej: Thaum nruab, koj tuaj yeem pib siv lub cuab yeej los siv ZIP compression algorithm hauv software. Nyob ntawm cov cuab yeej xaiv, koj yuav tsum tau qhib qhov kev pab cuam thiab ua raws li cov lus qhia tau muab rau hauv cov neeg siv interface kom nthuav cov ntaub ntawv xav tau. Nws yog ib qho tseem ceeb kom ua raws li cov kev coj ua zoo tshaj plaws thiab xaiv cov kev xaiv tsim nyog kom ua tiav kev ua haujlwm siab compression thiab cov ntaub ntawv ruaj ntseg.

9. Yuav ua li cas rau compress cov ntaub ntawv siv ZIP Compression Algorithm

ZIP Compression Algorithm yog cov cuab yeej muaj txiaj ntsig zoo rau kev txo qhov loj ntawm cov ntaub ntawv thiab cov folders, ua rau lawv yooj yim rau xa thiab khaws cia. Tom ntej no, kuv yuav piav qhia yuav ua li cas compress cov ntaub ntawv siv cov algorithm no kauj ruam yog kauj ruam:

1. Xaiv cov ntaub ntawv los yog folders koj xav compress. Koj tuaj yeem ua qhov no los ntawm txoj cai-nias rau ntawm lawv thiab xaiv "Xa mus" kev xaiv thiab tom qab ntawd "Compressed (zip) folder." Koj tuaj yeem siv qhov kev xaiv compression hauv koj cov ntaub ntawv tswj software.

2. Thaum cov khoom yuav tsum tau compressed raug xaiv, ZIP cov ntaub ntawv yuav raug tsim nrog tib lub npe raws li tus thawj nplaub tshev los yog cov ntaub ntawv. Cov ntaub ntawv no yuav muaj tag nrho cov ntsiab lus xaiv, tab sis nyob rau hauv ib qho kev txo qis.

10. Cov txheej txheem compression siv los ntawm ZIP Algorithm

ZIP algorithm siv ntau cov txheej txheem compression los txo cov ntaub ntawv loj thiab ua kom yooj yim rau khaws thiab xa mus. Cov txheej txheem no yog siv rau ntau theem ntawm compression thiab decompression txheej txheem. Hauv qab no yog qee cov txheej txheem uas siv los ntawm ZIP algorithm:

1. Phau ntawv txhais lus compression: Cov txheej txheem no saib rau cov qauv rov ua dua hauv cov ntaub ntawv thiab hloov lawv nrog kev xa mus rau phau ntawv txhais lus sab hauv. Nyob rau hauv txoj kev no, cov ntaub ntawv loj yog txo los ntawm kev khaws cia tsuas yog cov ntaub ntawv xa mus rau qhov rov ua dua. ZIP algorithm siv qhov sib txawv ntawm LZ77 algorithm los ua cov txheej txheem no.

2. Huffman compression: Cov txheej txheem no yog nyob ntawm qhov zaus ntawm cov tsos ntawm cov cim hauv cov ntaub ntawv. Ntau zaus cov cim tau sawv cev los ntawm cov lej luv dua, thaum cov cim tsis tshua muaj tshwm sim los ntawm cov lej ntev. Ua li no, cov cim feem ntau siv qhov chaw tsawg dua hauv cov ntaub ntawv compressed.

11. Kev tshuaj xyuas qhov ua tau zoo ntawm ZIP Compression Algorithm

ZIP compression algorithm yog ib qho ntawm feem ntau siv vim nws cov kev ua tau zoo thiab muaj peev xwm txo qhov loj ntawm cov ntaub ntawv thiab cov folders. Nyob rau hauv qhov kev tshuaj ntsuam no, peb yuav ua tib zoo tshuaj xyuas cov yam ntxwv tseem ceeb ntawm no algorithm thiab ntsuam xyuas nws efficiency nyob rau hauv cov nqe lus ntawm ceev thiab degree ntawm compression. Txhawm rau ua qhov kev ntsuam xyuas no, peb yuav siv cov txheej txheem ntawm ntau hom thiab ntau thiab tsawg, thiab peb yuav sib piv cov txiaj ntsig tau txais ua ntej thiab tom qab siv ZIP algorithm.

Ua ntej tshaj plaws, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias ZIP compression algorithm siv kev sib xyaw ua ke ntawm cov txheej txheem lossless compression los txo cov ntaub ntawv ntau thiab tsawg. Cov txheej txheem no suav nrog tshem tawm cov ntaub ntawv rov ua dua, encoding cov ntaub ntawv qauv, thiab txo cov ntaub ntawv loj los ntawm kev sib koom ua ke cov ntaub ntawv zoo sib xws. Qhov no tso cai rau lub algorithm kom ua tiav tus nqi siab compression yam tsis muaj kev cuam tshuam cov ntaub ntawv ncaj ncees.

Hais txog qhov ua tau zoo ntawm ZIP algorithm, nws compression thiab decompression ceev yog qhov tseem ceeb piv rau lwm cov algorithms zoo sib xws. Tsis tas li ntawd, nws txhawb ntau hom ntaub ntawv, ua rau nws muaj ntau yam kev xaiv rau compressing ntau hom ntaub ntawv. Hauv peb qhov kev ntsuam xyuas, peb tau pom tias ZIP algorithm ua tiav qhov kev txo qis ntawm cov ntaub ntawv loj, tshwj xeeb tshaj yog cov ntaub ntawv ntau dua.

Nyob rau hauv luv luv, nws tau qhia nws lub peev xwm los compress cov ntaub ntawv zoo thiab sai, thaum tuav cov ntaub ntawv ncaj ncees. Nws cov kev txhawb nqa rau ntau hom ntawv thiab siab compression tus nqi ua rau qhov algorithm yog qhov kev xaiv txhim khu kev qha rau cov neeg uas xav tau txo qhov loj ntawm cov ntaub ntawv thiab cov folders. Los ntawm kev siv ZIP algorithm, kev ua kom zoo ntawm qhov chaw cia tuaj yeem ua tiav, nrog rau kev xa cov ntaub ntawv sai dua hauv Is Taws Nem.

12. Kev ruaj ntseg thiab encryption hauv ZIP Compression Algorithm

ZIP compression algorithm yog dav siv los compress thiab decompress cov ntaub ntawv thiab folders. Txawm li cas los xij, raws li kev hloov pauv cov ntaub ntawv online thiab khaws cia nce nyob rau hauv huab, nws yog ib qho tseem ceeb kom ntseeg tau tias kev ruaj ntseg ntawm cov ntaub ntawv compressed. Hauv seem no, peb yuav tshawb nrhiav kev ruaj ntseg thiab kev ntsuas encryption uas tuaj yeem siv rau ZIP compression algorithm los tiv thaiv kev ncaj ncees thiab tsis pub lwm tus paub ntawm cov ntaub ntawv.

Txhawm rau kom muaj kev ruaj ntseg ntawm ZIP compressed cov ntaub ntawv, nws raug nquahu kom ua raws li cov kauj ruam no:

• Siv ib lo lus zais muaj zog: Thaum tsim ZIP archive, tus password tuaj yeem raug muab los tiv thaiv nws. Nws yog ib qho tseem ceeb uas yuav tau siv tus password tshwj xeeb uas muaj zog txaus kom tsis txhob muaj kev tawm tsam brute force.
• Siv AES encryption: Advanced Encryption Standard (AES) encryption algorithm muab kev ruaj ntseg ntau dua rau cov ntaub ntawv ZIP. Thaum siv AES, ntau qib sib txawv ntawm kev encryption tuaj yeem xaiv los tiv thaiv cov ntaub ntawv hauv cov ntaub ntawv compressed.
• Xyuas kom meej tias cov ntaub ntawv muaj kev ncaj ncees: Ntxiv nrog rau kev encryption, nws raug nquahu kom siv cov cuab yeej uas tso cai rau koj los txheeb xyuas qhov tseeb ntawm ZIP cov ntaub ntawv. Cov cuab yeej no tuaj yeem tshawb xyuas qhov hloov pauv lossis kev ua tsis ncaj ncees hauv cov ntaub ntawv, ua kom lawv txoj kev ncaj ncees thiab kev nyab xeeb.

Hauv cov ntsiab lus, yog cov ntsiab lus tseem ceeb los tiv thaiv kev tsis pub lwm tus paub thiab kev ncaj ncees ntawm cov ntaub ntawv compressed. Los ntawm kev siv cov passwords muaj zog, AES encryption, thiab txheeb xyuas cov ntaub ntawv ncaj ncees, kev ntsuas tau zoo tuaj yeem siv los ua kom muaj kev ruaj ntseg ntawm cov ntaub ntawv compressed.

13. Kev txhim kho thiab kev hloov pauv ntawm ZIP Compression Algorithm

ZIP compression algorithm yog ib qho ntawm feem siv thiab paub niaj hnub no. Tau ntau xyoo, qhov algorithm no tau dhau los ua ntau yam kev txhim kho thiab hloov kho kom muaj txiaj ntsig zoo dua thiab ua tau zoo hauv cov ntaub ntawv compression. Tshooj lus no yuav nthuav dav lub , nrog rau cov yam ntxwv tseem ceeb thiab kev ua haujlwm uas ua rau nws nrov heev.

Txoj kev loj hlob ntawm ZIP algorithm hnub rov qab mus rau xyoo 1980s, thaum tus kws tshaj lij Phil Katz tau tsim txoj hauv kev tshiab los nthuav cov ntaub ntawv. Qhov algorithm no yog ua raws li cov ntaub ntawv compression siv cov txheej txheem Huffman coding, uas muab cov lej sib txawv ntawm qhov ntev mus rau cov cim sib txawv uas tshwm sim hauv cov ntaub ntawv. Cov txheej txheem no tso cai rau kev ua haujlwm ntau dua hauv compression, txij li cov cim uas tshwm sim ntau dua yog sawv cev nrog cov lej luv dua.

Tau ntau xyoo, ZIP algorithm tau hloov zuj zus los muab kev nrawm dua thiab zoo dua compression piv. Ib qho kev txhim kho tseem ceeb tshaj plaws yog kev qhia txog DEFLATE algorithm, uas muab Huffman coding nrog rau cov txheej txheem ntxiv hu ua length-destance coding. Qhov kev sib xyaw ua ke no tso cai rau ntau dua compression thiab ceev decompression ntawm ZIP cov ntaub ntawv. Tam sim no, ZIP algorithm tau siv dav hauv cov ntawv thov compression, xws li zip thiab decompression programs, nrog rau kev tsim ZIP archives. nyob rau hauv ntau lub tshuab sib txawv kev ua haujlwm.

14. Yav tom ntej ntawm ZIP Compression Algorithm thiab cov qauv hauv cov ntaub ntawv compression

ZIP compression algorithm tau siv dav rau ntau xyoo los txo cov ntaub ntawv ntau thiab tsawg thiab txhim kho cov ntaub ntawv khaws cia. Txawm li cas los xij, nrog kev nce qib ntawm kev siv thev naus laus zis thiab kev xav tau ntau ntxiv rau cov tshuab compression muaj txiaj ntsig, cov qauv tshiab tau tshwm sim uas tuaj yeem hloov pauv lub neej yav tom ntej ntawm cov algorithm no.

Ib qho ntawm cov kev tshwm sim tshwm sim hauv cov ntaub ntawv compression yog kev siv ntau dua lossless compression algorithms xws li Brotli thiab Zstandard. Cov algorithms no tau ua pov thawj tias muaj txiaj ntsig zoo dua ZIP raws li cov ntaub ntawv loj thiab compression ceev. Tsis tas li ntawd, lawv muaj cov yam ntxwv ntxiv xws li kev sib luag compression thiab incremental decompression, ua rau lawv zoo tagnrho rau kev siv hauv qhov chaw ua haujlwm siab.

Lwm qhov tseem ceeb sib txawv yog cov ntaub ntawv compression raws li kev txawj ntse cuav. Compression algorithms siv tshuab kev kawm txuj ci thiab neural networks tuaj yeem hloov kho kom zoo rau ntau hom ntaub ntawv thiab ua tiav qhov compression ntau dua. Qhov no yuav qhib tau cov tshiab possibilities rau compressing multimedia ntaub ntawv, xws li dluab thiab yeeb yaj duab, uas yuav nyuaj rau compress nrog ib txwm algorithms.

Hauv kev xaus, ZIP compression algorithm yog ib qho cuab yeej tseem ceeb hauv cov ntaub ntawv compression. Los ntawm nws cov txheej txheem raws li redundancy txo thiab cov ntaub ntawv coding, lub algorithm tso cai rau cov ntaub ntawv me me kom txo qis, yog li optimizing kev cia thiab xa cov ntaub ntawv.

ZIP compression algorithm tau siv dav txij li nws tsim xyoo 1989, dhau los ua tus qauv hauv kev lag luam hauv computer. Nws cov kev ua tau zoo, kev yooj yim, thiab kev sib koom ua ke ntawm cross-platform ua rau nws muaj ntau yam kev xaiv rau compressing thiab decompressing cov ntaub ntawv ntawm cov kev khiav hauj lwm sib txawv.

Los ntawm kev nkag siab yuav ua li cas ZIP compression algorithm ua haujlwm, cov neeg siv tuaj yeem ua kom zoo dua ntawm nws lub peev xwm los nthuav cov ntaub ntawv thiab cov npe, txo lawv qhov loj me yam tsis cuam tshuam rau lawv cov ntsiab lus. Qhov no yog tshwj xeeb tshaj yog pab tau nyob rau hauv lub sij hawm uas qhov chaw cia yog txwv los yog nyob rau sib qhia cov ntaub ntawv Hauv Is Taws Nem, qhov kev sib kis ceev yog qhov tseem ceeb.

Txawm hais tias muaj lwm yam compression algorithms muaj, ZIP algorithm tau ua pov thawj nws tus kheej dhau sijhawm thiab tseem siv dav niaj hnub no. Raws li ib feem tseem ceeb ntawm ntau daim ntawv thov thiab kev khiav hauj lwm systems, qhov algorithm no tseem muab txoj hauv kev zoo thiab txhim khu kev qha rau compress cov ntaub ntawv thiab yooj yim tswj cov ntaub ntawv.

Hauv cov ntsiab lus, ZIP compression algorithm yog ib qho cuab yeej tseem ceeb hauv cov ntaub ntawv compression, tso cai rau koj los txhim kho kev khaws cia thiab xa cov ntaub ntawv hauv ntau qhov chaw. Nws cov kev ua tau zoo thiab kev sib koom ua ke ntawm cross-platform ua rau nws muaj kev ntseeg siab rau cov neeg siv thiab cov tuam txhab nrhiav kom txo qhov loj ntawm lawv cov ntaub ntawv yam tsis muaj kev cuam tshuam lawv cov ntsiab lus.