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🚂 Arrays Explained Like You're 5
The Train Imagine a train with numbered compartments: 🚂 Car 0 Car 1 Car 2 Car 3 Car 4 Each car has a number starting from 0! and can hold one thing. Arrays ar...
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Coding Challenge Practice - Question 105
Problem Create a function that removes duplicate values from an array in‑place i.e., without allocating a new array. Approach 1. Use a Set seen to keep track o...
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Why Array Index Starts from 0: The Real Reason Behind the Scenes
If you’ve ever written code, you’ve probably asked this question at least once: > “Why do arrays start from index 0 instead of 1?” At first glance, starting fro...
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An array is a row of boxes. Each box holds a value. Each box has a number.
Cleaned Markdown markdown !Forem Logohttps://media2.dev.to/dynamic/image/width=65,height=,fit=scale-down,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s...
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How to Find the Symmetric Difference Between Two Arrays in JavaScript
Approach Overview We compare two arrays and return a new array that contains only the values that exist in one array but not in both. In other words, we remove...
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Day 1: The Array Lie (Arrays vs Pointers in C)
Introduction Today marks Day 1 of my 30‑Day Coding Challenge to master C internals, algorithms, and database design. Why am I doing this? In a world of AI and...
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Why Arrays Start at Index 0: A Memory-Level Explanation
Why Do Arrays in C/C++ Start at Index 0? To understand this properly, we need to look at how arrays are stored in memory and how the compiler computes element...
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🍀 Beginner-Friendly Guide 'Four Divisors' – LeetCode 1390 (C++, Python, JavaScript)
!Cover image for 🍀 Beginner-Friendly Guide 'Four Divisors' – LeetCode 1390 C++, Python, JavaScripthttps://media2.dev.to/dynamic/image/width=1000,height=420,fit...
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[BOJ/C, C++] 단계별로 풀어보기 문자열 ~ 2차원 배열
'2026‑01‑02 일자 정리 문자열부터 2차원 배열까지 여러 문제를 풀어보았습니다. 아래에 각 문제별 풀이와 핵심 포인트를 정리했습니다.
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🐦🔥Beginner-Friendly Guide 'Plus One' – LeetCode 66 (C++ | Python | JavaScript)
Problem Description You are given an array digits that represents a non‑negative integer, where each element is a single digit and the most significant digit i...
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Day 1 of DSA: Arrays Fundamentals
Day 1: Arrays I chose arrays as the starting point for my DSA journey. Although I am not a complete beginner—I have learned Java and basic DSA earlier—I felt a...