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1.chi savolga javob: | ||
Linkedlist malumotlarni saqlashda nodelardan foydalanadi va malymotlarni o'chirish yoki qo'shish | ||
ammallari ArrayListdan ko'ra tezroq bajariladi . Shuningdek Linkedlist ning default holatda | ||
size 0 bo'ladi. | ||
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Arraylist malumotlarni saqlashda arraydan foydalanadi va malumotlarni olish va izatish amallari | ||
Linkedlistdan ko'ra tezroq bajariladi . Shuningdek Arraylistning default holatda size 10 ga teng | ||
bo'ladi. | ||
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2.chi savolga javob: | ||
LinkedHashMap malumotlarni saqlashda HashMapdan foydalanadi. | ||
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3.chi savolga javob: | ||
Ho'sh oldin javani 1.5 chi versiyasigacha gereneric bo'lmagan lekin biz Collectionlardan foydalana olganmiz | ||
biroq harsafa to'plamdan biror bir elementni olayotganda uni cast qilishimizga to'g'ri kelgan va bunda ko'p vaqt | ||
ketgan keyin Generic qo'shilganda keyin bu muammo bartaraf etilgan.Generic bizga clean code yozishda va ishlash | ||
tezligida katta ustunlik beradi. | ||
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4.chi savolga javob: | ||
Collection heirarcy bu collectionlar iyarxiyasi yani java dasturchilar tomonida yaratilgan bir qator foydali classlar | ||
va interfeyslardan yig'indisidir. Uning eng tepasida Iterable turadi u javadagi muhim 3 ta cursorlardan bir bo'lib | ||
bizga to'plamalrni for-each loopda aylanish imkonini beradi. | ||
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-- List \ | ||
Iterible --> Collection -- Queue - bular interface bo'lib barchasi collectiondan extend olgan va ularni yana boshqa | ||
-- Set / | ||
child classlar va interfeyslari bor. |