Скачать или смотреть Question No: 709 - To Lower Case – LeetCode (C++ Solution)

In this video, we solve LeetCode Problem 709 – To Lower Case, a simple yet essential problem that helps beginners practice string manipulation and understand how character transformations work in coding interviews.

📌 Problem Statement:
Given a string s, you need to convert all uppercase letters into lowercase letters and return the modified string.

Example 1:

Input: s = "Hello"

Output: "hello"

Example 2:

Input: s = "LOVELY"

Output: "lovely"

💡 Key Concepts Covered:
✔️ String traversal and character operations
✔️ Difference between ASCII values of uppercase and lowercase letters
✔️ How to apply built-in functions (like tolower() in C++ or toLowerCase() in JS)
✔️ Writing clean and efficient solutions for simple problems

🚀 What You’ll Learn in This Video:

How to solve the problem using brute force character conversion.

How to use built-in functions for concise solutions.

Step-by-step dry run with examples.

The role of ASCII values in character transformations.

Writing clean, interview-ready code.

🔑 Difficulty: Easy
🔑 Topics: String, Character Manipulation

✨ This is one of the simplest problems on LeetCode but very useful for beginners to understand string handling basics. If you’re learning C++ or JavaScript, this is a must-practice question to build confidence and speed for interviews.

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