Скачать или смотреть LeetCode 1: Two Sum | C++ Solution + Step-by-Step Explanation (Beats 100%)

LeetCode 1: Two Sum | C++ Solution + Step-by-Step Explanation (Beats 100%)

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In this video, we solve LeetCode Problem 1: Two Sum using *C++*, with a clear step-by-step explanation and an optimised solution that beats 100% in runtime.

Understand the Two Sum problem
Step-by-step logic building in C++
Beginner-friendly and interview-oriented explanation
Covers edge cases and optimisations
Efficient solution walkthrough with hashmap approach

🧠 Problem Summary:
Given an array of integers `nums` and an integer `target`, return indices of the two numbers such that they add up to `target`.
You may assume that each input would have exactly one solution, and you may not use the same element twice.
You can return the answer in any order.

📌 Prerequisites:
Basic understanding of C++ syntax
Familiarity with arrays and indexing
Knowledge of hashmaps (unordered_map in C++)

🎯 Who is this video good for:
Students preparing for coding interviews
Beginners learning DSA in C++
Programmers improving problem-solving skills
LeetCode enthusiasts looking for optimised C++ solutions

📌 Topics Covered:
C++ solution for Two Sum
How to find the optimised approach
Using hashmap (unordered_map) in C++
Handling edge cases and efficiency analysis

📁 Code & Resources:

Timestamps:
00:00 Introduction
00:21 Problem explanation
00:45 solution
08:20 C++ code
11:07 optimisations
14:17 dry run for edge cases

🧑‍💻 Want more LeetCode problems solved in C++?
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