An warware: rage jimlar

Rage Sum matsala ce ta gama gari da yawancin masu haɓakawa da masu sha'awar shirye-shirye suke fuskanta. Yana buƙatar mahimman fahimtar dabarun shirye-shirye. Ko da yake Java yana ba da hanyoyi daban-daban don magance wannan matsala, har yanzu yana iya zama wani aiki mai rudani ga wasu. A cikin wannan labarin, za mu shiga cikin ɗaya daga cikin ingantattun hanyoyin magance matsalar Rage Sum a Java, tare da bayyana kowane ɓangaren lambar mataki-mataki, ta yadda za a iya fahimtar shi cikin sauƙi har ma ga masu farawa.

Matsalar Rage Jima'i

Matsalar rage jimlar da gaske ta taso ne zuwa tara lambobi a rafi na lamba. Matsalar na iya samun bambancin daban-daban. Yana iya zama haɗakar abubuwa na tsararru, abubuwan da ke cikin LinkedList ko taƙaita abubuwan rafi a cikin mahalli mai yawan zaren da ke amfani da aikin `raguwa.reduce()'. Yana amfani da maganganun lambda da musaya masu aiki, waɗanda mahimman fasalulluka ne na Java 8 da sama.

Maganin Java

Java yana ba da ɗimbin ɗakunan karatu da ayyuka don sauƙaƙewa da warware matsalar. Za mu yi amfani da Stream API wanda aka gabatar a Java 8. Musamman, hanyar `reduce()` wacce ke haɗa abubuwan rafi don samar da sakamako guda ɗaya.

Ga samfurin lambar Java don yin haka.

public int sumOfArray(Integer[] numbers) {
    return Arrays.stream(numbers)
                 .reduce(0, Integer::sum);
}

Bayanin mataki-mataki na Code

Lambar da ke sama tana wakiltar hanyar da ke ɗaukar jeri na lamba azaman hujja kuma ta dawo da jimlar waɗannan lambobin.

• Na farko, `Arrays.stream(lambobi)` yana canza tsararru zuwa Rafi.
• Ana kiran hanyar 'rage()' akan wannan rafi. Wannan hanya tana ɗaukar sigogi biyu: ƙimar farko na jimlar da hanyar da za a yi amfani da ita don ƙididdige jimlar.
• An saita ƙimar farko a wannan yanayin azaman '0' kuma hanyar da aka yi amfani da ita ita ce 'Integer:: jimla'. 'Integer:: jimla' nuni ne ga tsayayyen hanyar '' jimlar' a cikin ajin lamba. Wannan hanya tana mayar da jimillar hujjojinta. Ana aiwatar da shi azaman hanyar tunani cikin hanyar ragewa.
• Aikin `reduce()` sannan ya yi jimlar aiki akan kowane abubuwan da ke cikin rafi sannan a dawo da jimlar sakamakon aikin.

Dakunan karatu na Java da Makamantan Ayyuka

Java yana ba da ɗimbin ɗakunan karatu waɗanda zasu iya taimaka maka sarrafa da aiki akan rafuka. Makamantan ayyuka don 'raguwa' sun haɗa da 'tattara', 'ƙidaya', 'match', 'nemo', 'mai ƙididdigewa' da sauransu, dangane da aikin da ake buƙatar aiwatarwa akan rafi.

Ta wannan kwatancin, muna iya ganin cewa Java yana ba da kayan aiki masu ƙarfi da sassauƙa don warware matsaloli masu rikitarwa, har ma kamar matsalar rage jimla. Shaida ce ga juzu'i da ƙaƙƙarfan harshe.