LeetCode - Starting Again Day 1

✅ Question 1

Title: Two Sum

Difficulty: Easy

Topic Tags: Arrays, HashMap, Two Pointers

Description: Find indices of two numbers in an array that add up to a target value.

Link: Two Sum

---

✅ Question 2

Title: Reverse String

Difficulty: Easy

Topic Tags: Strings, Two Pointers

Description: Reverse a string in-place given as an array of characters.

Link: Reverse String

---

✅ Question 3

Title: Design HashMap

Difficulty: Easy

Topic Tags: HashMap, Design

Description: Implement a basic HashMap without using built-in hash table libraries.

Link: Design HashMap

---

✅ Question 4

Title: Binary Tree Paths

Difficulty: Easy

Topic Tags: Trees, DFS, Recursion

Description: Return all root-to-leaf paths in a binary tree as strings.

Link: Binary Tree Paths

---

✅ Question 5

Title: Reverse Linked List

Difficulty: Easy

Topic Tags: Linked List, Recursion

Description: Reverse a singly linked list and return the head of the reversed list.

Link: Reverse Linked List