DEV Community: leetcode_daily

The roots

leetcode_daily — Mon, 02 Feb 2026 16:05:12 +0000

As a SDE aspirant, since i am building by Basics and aiming for Big MNCs,I always forget about the size and default values of Data Types...we often overlook this topic but it is as important as everything else,Therefore:

Today's Topic is Default Types->

When a variable is declared but not initialized, it is assigned a default value based on its data type.

The default values for the primitive data types in Java are as follows:

byte: 0
short: 0
int: 0
long: 0L
float: 0.0f
double: 0.0d
char: '\u0000' (null character)
boolean: false

Sizes of default data types

Day-2 (1929)-Arrays

leetcode_daily — Wed, 21 Jan 2026 16:01:32 +0000

Hlo peopleeeee 👋
Without wasting any time, let’s get started!!

(Incase you landed here just now)
I’m restarting my LeetCode journey with a Back-to-Basics mindset, beginning with array fundamentals.
I’ll be solving problems step by step — starting from easy, then gradually moving to medium and hard ones.

Because honestly,

Consistency >>> everything else

📌** Day 2 **

Array –Concatenation of Array

🔗_ Check out the code + analysis here:_
👉 GitHub-[(https://github.com/niharika1112/leetcode_daily/blob/main/DAY-2_%20Concatenation%20of%20Array)]

That’s all for today!
I’ll be sharing my progress daily, and we’ll be growing together 🚀

If you have:
suggestions to improve my approach, or
tips for writing better solutions

I’d genuinely love to hear your thoughts in the comments 💬
Always open to learning from people more experienced than me.

See you on Day 3 👩‍💻✨

Day-1 (1920)-Arrays

leetcode_daily — Tue, 20 Jan 2026 16:01:30 +0000

Hlo peopleeeee 👋
Without wasting any time, let’s get started!!

(Incase you landed here just now)
I’m restarting my LeetCode journey with a Back-to-Basics mindset, beginning with array fundamentals.
I’ll be solving problems step by step — starting from easy, then gradually moving to medium and hard ones.

Because honestly,

Consistency >>> everything else

📌 Day 1 Focus

Array – Build Array from Permutation

Instead of just solving, I’m focusing on:

Understanding the problem deeply

Writing clean, readable code

Analyzing why the solution works

🔗_ Check out the code + analysis here:_
👉 GitHub-[(https://github.com/niharika1112/leetcode_daily/blob/main/DAY-1_%20Build%20Array%20from%20Permutation)]

That’s all for today!
I’ll be sharing my progress daily, and we’ll be growing together 🚀

If you have:
suggestions to improve my approach, or
tips for writing better solutions

I’d genuinely love to hear your thoughts in the comments 💬
Always open to learning from people more experienced than me.

See you on Day 2 👩‍💻✨

Restarting My DSA Journey in Java — Solving Kunal Kushwaha’s Assignments + LeetCode Daily!

leetcode_daily — Sun, 18 Jan 2026 13:54:36 +0000

Hey DEV Community! 👋

I’m excited (and a little nervous 😄) to announce that I’m restarting my Data Structures & Algorithms journey — in Java — and I’ll be sharing every step of it here!

After pausing DSA for a while, I realized how much I want to build consistency again, so I’m jumping back in from the absolute basics.

What I’m Starting With
I’ll be solving:

⭐ Kunal Kushwaha’s Java DSA Assignments
Kunal’s course is beginner-friendly and structured perfectly for building fundamentals.

Along with that, I’ll also:

⭐ Solve 1 LeetCode question daily
and break down the logic in simple language.

🧠** What You Can Expect From This Series**

Every post will contain:
✔ A beginner-friendly explanation
✔ Step-by-step logic
✔ Java implementation
✔ Time & space complexity
✔ Mistakes + lessons learned
✔ Links to solutions in my GitHub repo

📍 Repo Tracking My Progress

You can follow all my code here:
👉 GitHub Repo:(https://github.com/niharika1112/leetcode_daily)

This repo will include:

Kunal’s assignment solutions.
LeetCode practice.
Topic-wise categorization.
My notes + takeaways.

🧩 Topics I’ll Cover (in order)

Arrays
Strings
Hash Maps
Two Pointers
Sliding Window
Linked Lists
Trees
Recursion
Graphs
Dynamic Programming

🙌_ Why I’m Doing This Publicly_

Accountability pushes consistency
Helping others learn motivates me
Documenting my progress keeps me honest
Maybe someone struggling with Java finds this useful 💙

💬 Join Me!

If you’re learning DSA in Java too:
Comment what you’re working on
Suggest questions
Drop resources
Correct my mistakes😄

This is a learning journey, not a perfect one.

🚀 Let’s Go!

First post coming up soon:
➡️ Kunal DSA Assignment — Basics + Problem 1 in Java!

Thanks for reading — and if my progress helps or inspires you even a little, follow along & star ⭐ my repo for support!

Happy coding 💻
— herclarity_space