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Algorithm na Neman Zari (Greedy Search) a cikin PHP: Bayani, Misali & Lamba

Algorithm na Neman Zari wata hanya ce mai mahimmanci a cikin shirye-shiryen PHP, ana amfani da ita don magance matsalolin ingantawa ta hanyar yanke shawara dangane da fa'idodin ɗan gajeren lokaci. Ana amfani da wannan algorithm galibi a cikin ƙalubalen haɓakawa, tsara tsarin aiki, da ingantattun saiti.

Yadda Algorithm Neman Zama ke Aiki

Algorithm na Neman Zari yana mai da hankali kan yanke shawara bisa fa'idodin ɗan gajeren lokaci ba tare da la'akari da tasirin dogon lokaci ba. Ya ƙunshi matakai masu zuwa:

  1. Gano Ayyukan Haɓakawa: Algorithm yana gano aikin da za a inganta da kuma akwai zaɓuɓɓuka don zaɓi.
  2. Yi Hukunci: Algorithm yana yanke shawara bisa ga fa'idodin ɗan gajeren lokaci, kamar zaɓin zaɓi wanda ke ba da mafi girman ƙimar nan take.
  3. Duba Yanayin Ƙarshe: Algorithm yana bincika ko yanayin ƙarewa ya cika ko zaɓi na ƙarshe. Idan ba haka ba, tsarin zai ci gaba.

Abũbuwan amfãni da rashin amfani Algorithm Neman Zama

Amfani:

  • Tasiri ga Manyan Matsaloli: Wannan algorithm sau da yawa yana da inganci lokacin da ake magance matsalolin da ke buƙatar yanke shawara mai sauri kuma baya buƙatar yin la'akari da duk zaɓuɓɓuka.
  • Sauƙi don Aiwatarwa: Algorithm na Neman Zari gabaɗaya yana da sauƙin aiwatarwa kuma baya buƙatar mahimman albarkatun ƙididdiga.

Rashin hasara:

  • Rashin Garanti na Haɓaka Duniya: Wannan algorithm na iya haifar da ingantattun mafita na cikin gida waɗanda ba su da kyau a duniya.
  • Rashin La'akari da Tasirin Tsawon Lokaci: Algorithm ya yi watsi da tasirin dogon lokaci na yanke shawara kuma yana mai da hankali kan fa'idodin ɗan gajeren lokaci.

Misali da Bayani

Yi la'akari da misali na matsala mai sauƙi na tsara aikin aiki: Nemo mafi kyawun jadawalin don kammala iyakar adadin ayyuka a cikin ƙayyadadden lokaci ta amfani da Algorithm na Ƙarfafawa a cikin PHP.

function greedyScheduler($jobs, $timeLimit) {  
    // Implementation of greedy scheduling algorithm  
    // ...  
}  
  
$jobs = array(  
    array('Job A', 4),  
    array('Job B', 2),  
    array('Job C', 5),  
    array('Job D', 3)  
);  
  
$timeLimit = 10;  
  
$schedule = greedyScheduler($jobs, $timeLimit);  
echo "Optimal schedule: ";  
foreach($schedule as $job) {  
    echo $job. ";  
}

A cikin wannan misalin, muna amfani da Algorithm na Neman Zari don tsara ayyuka ta hanyar da za ta ƙara yawan ayyukan da aka kammala a cikin ƙayyadadden lokaci. Algorithm yana zaɓar ayyuka bisa ga ɗan gajeren lokacin aiwatarwa. Sakamakon shine jadawali inda ake ƙara kowane aiki ɗaya bayan ɗaya cikin tsari mafi ƙarancin lokacin aiwatarwa.

Duk da yake wannan misalin yana nuna yadda za a iya amfani da Algorithm na Ƙarfafawa don magance matsalar tsara tsarin aiki, ana iya amfani da shi ga wasu matsalolin ingantawa a cikin PHP, kamar inganta kayan aiki ko sarrafa tsari.