349.6K
ENFind the size of ArrayList in Java. This is the most commonly asked question in Java interviews
@engineeringdigest.in
#Arraylist Methods
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HE💡 5 Famous ArrayList Interview Questions!
In this reel, I’ve explained the most asked ArrayList questions that you can’t miss for Java interviews 🚀
👉 Covers core concepts + tricky parts
👉 Simple explanations with examples
👉 Perfect for freshers & experienced candidates
Master these and you’ll crack your next interview with confidence! 💯
#Java #ArrayList #CodingInterview #ITJobs #Skillio #ProgrammingTips
@helloskillio
13.0K
TR1) Difference between ArrayList and LinkedList?
ArrayList is easy to read data but adding or removing in middle is slow. LinkedList is easy to add or remove data but reading takes more time.
2) Can you overload and override static methods?
We can overload static method by changing parameters. We cannot override static method, it only hides in child class.
3) How does HashMap work internally?
HashMap stores data using a key and finds place using hash value. If two keys go same place, it keeps them together in list.
4) What is the hashCode() contract?
If two objects are equal, their hashCode must be same. If hashCode is same, objects may or may not be equal.
5) What features were introduced in Java 8?
Java 8 introduced lambda to write short code. It also added streams and new date and time features.
✅ Comment "Book" to download rest of the questions answers in one ebook
@treeofcoders
26.7K
AMJava List Methods Summary 😎
Java's java.util.List interface, used in classes like ArrayList and LinkedList, offers these key methods:
Add Elements:
add(E e): Add element to end.
add(int, E): Insert at index.
addAll(Collection<? extends E>): Add collection.
Access Elements:
get(int): Retrieve by index.
indexOf(Object), lastIndexOf(Object): Find element index.
Remove Elements:
remove(int)/remove(Object): Remove by index/element.
clear(): Empty list.
Size & Check Empty:
size(): Count elements.
isEmpty(): Check if empty.
Sublist & Range:
subList(int, int): Get sublist.
addAll(int, Collection<? extends E>): Insert collection at index.
removeAll(Collection<?>): Remove specified elements.
Replace/Set Elements:
set(int, E): Replace element at index.
Iteration:
Loop through elements.
Sort & Reverse:
sort(Comparator<? super E>): Sort with comparator.
Collections.sort(List<T>): Natural order sort.
Collections.reverse(List<?>): Reverse list.
Element Existence:
contains(Object), containsAll(Collection<?>): Check for element(s).
Array Conversion:
toArray(), toArray(T[]): List to array.
@amigoscode
3.4K
DUArrayList vs LinkedList? They're both in java.util, inside the java.base module. Simple as that. #JavaBasics #Java #ArrayList #LinkedList #CodingTips #JavaProgramming
@durgajobsinfo
39.8K
__🔥 Java ArrayList Quick Test — Simple Code, Sneaky Logic 😈💻
Don’t underestimate small methods… they love tricking you ⚠️
1️⃣ Output: 2
size() returns the total number of elements
after all add() operations.
2️⃣ Output: true
clear() removes all elements,
so isEmpty() returns true 🧠
3️⃣ Output: 0
indexOf() always returns the first occurrence
of the element, even if duplicates exist 👀
How many did you get right without running the code? 🤔
Comment your score 👇
Save • Share • Follow for daily Java traps 🚀
#JavaQuiz #JavaArrayList #LearnJava #CodingReels #ProgrammerLife
@__.java.boy.__
33.8K
COPython List Methods Explained | Quick & Easy Guide 🐍💻
Master the most commonly used Python list methods in just a few seconds! 🚀
This short video breaks down essential list operations like adding, removing, sorting, and modifying elements—perfect for beginners and quick revision.
✨ What you’ll learn:
➕ append() – Add elements
🧹 clear() – Remove all items
📋 copy() – Duplicate lists safely
🔢 count() – Count occurrences
➕ extend() – Merge iterables
🔍 index() – Find positions
🧩 insert() – Add at specific index
❌ pop() & remove() – Delete elements
🔁 reverse() – Reverse order
📊 sort() – Sort lists efficiently
🎯 Ideal for Python beginners, students, developers, and anyone hashtags learning data structures.
💡 Save this video for quick reference and follow for more Python tips!
🔑 Keywords (SEO friendly):
Python list methods, Python tutorial, Python basics, learn Python, Python for beginners, Python programming, list operations, data structures in Python, coding shorts
🔥 Hashtags:
#Python #PythonProgramming #LearnPython #PythonBasics
#Coding
@codewithprashantt
218.0K
RBMost important patterns of Array datastructure :
1- Two pointer
2- Sliding Window
3- Prefix sum
Practice these most important patterns and remember it.
Save this reel and let me know the next topic in the comment section 🫶🏻
All the best 😇
#jobs #coding #software #interview #codinglife #viraltrend #success #hiring #programming #google #amazon #faang #microsoft #walmart #dsa #interviewtips
@rbanjali.codes
185
CRList methods explained.....
@crackthecode_bridgingthegap
24.1K
COArrays in 45 Seconds #learntocode #javascript #computerscience #webdevelopment
@connercodes
470
212.7K
ANBasic explanation of array
@anshullokwani
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