✅ Completed Step 7 – Lecture 2 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered – Recursion (Patterns & Sum Problems): 🔹 Learn All Patterns of Subsequences (Theory – Medium 🔹 Count All Subsequences with Sum K (Hard) 🔹 Check if There Exists a Subsequence with Sum K (Medium) #StriverA2Z #TakeUForward #DSA #Recursion #Subsequences #ProblemSolving #CodingJourney #TUFWinterArc #Backtracking #CPlusPlus #LogicBuilding #LearningEveryday #Consistency #CodeWithStriver #Programming

✅ Completed Step 7 – Lecture 2 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Recursion – Medium Problems): 🔹 Generate All Binary Strings (Medium) 🔹 Generate Parentheses (Medium) 🔹 Print All Subsequences / Power Set (Medium) This lecture covered logical, pattern-based recursion problems 🔁 Learned how backtracking and recursion trees help generate binary strings, valid parentheses, and all subsequences ✨ These problems strengthened my understanding of recursion flow, combinatorics, and problem breakdown 💪 #StriverA2Z #TakeUForward #Recursion #Backtracking #PowerSet #Parentheses #BinaryStrings #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 7 – Lecture 1 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Recursion Stack Operations): 🔹 Sort a Stack using Recursion (Medium) 🔹 Reverse a Stack using Recursion (Easy) Today’s session reinforced how recursion can be combined with stack logic for in-place sorting and reversal 🔁 Learned how recursion serves as an implicit stack, enabling efficient element rearrangement and backtracking 💡 Great practice for mastering recursion flow and stack manipulation ⚡ #StriverA2Z #TakeUForward #DSA #Recursion #Stacks #ProblemSolving #CPlusPlus #Programming #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #CodingJourney

✅ Completed Step 7 – Lecture 1 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Recursion – Easy to Hard Problems): 🔹 Recursive Implementation of atoi() (Hard) 🔹 Power(x, n) (Medium) 🔹 Count Good Numbers (Easy) 🔹 Sort a Stack using Recursion (Medium) Today’s lecture focused on building core recursion concepts 🌀 Learned to break complex problems into smaller subproblems, use base and recursive cases efficiently, and apply recursion to stack-based challenges 🔁 Each problem strengthened logical thinking, dry-run analysis, and problem-solving flow 💪 #StriverA2Z #TakeUForward #Recursion #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 6 – Lecture 5 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Linked List – Hard Level Problems): 🔹 Reverse Linked List in Groups of Size K (Hard) 🔹 Rotate a Linked List (Medium) 🔹 Flattening of a Linked List (Hard) 🔹 Clone a Linked List with Next and Random Pointers (Hard) Today’s lecture focused on complex Linked List transformations 🔗 Learned efficient handling of nested structures, group reversals, and deep copying using recursion and optimized pointer manipulation 💡 These problems tested logic, patience, and deep understanding of Linked List dynamics 💪 #StriverA2Z #TakeUForward #LinkedList #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 6 – Lecture 4 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Doubly Linked List – Medium Problems): 🔹 Delete All Occurrences of a Key in DLL (Medium) 🔹 Find Pairs with Given Sum in DLL (Medium) 🔹 Remove Duplicates from Sorted DLL (Medium) Today’s lecture focused on mastering advanced operations in Doubly Linked Lists 🔗 Learned efficient approaches for deleting specific nodes, finding pairs with a target sum, and removing duplicates while maintaining optimal time and space complexity ⚡ #StriverA2Z #TakeUForward #LinkedList #DoublyLinkedList #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 6 – Lecture 6 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Linked List – Medium Problems): 🔹 Find the Intersection Point of Two Linked Lists (Medium) 🔹 Add 1 to a Number Represented by Linked List (Medium) 🔹 Add Two Numbers in Linked Lists (Medium) Today’s lecture concluded the Linked List section with interesting problems on mathematical operations and intersection logic 🔗 #StriverA2Z #TakeUForward #LinkedList #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 6 – Lecture 5 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Linked List – Medium Problems): 🔹 Remove Nth Node from the End of a Linked List (Medium) 🔹 Delete the Middle Node of a Linked List (Medium) 🔹 Sort Linked List (Medium) 🔹 Sort a Linked List of 0s, 1s, and 2s by Changing Links (Medium) Today’s lecture focused on mastering node deletion, sorting, and pointer manipulation in linked lists 🔗✨ #StriverA2Z #TakeUForward #LinkedList #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 6 – Lecture 4 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Advanced Linked List Problems): 🔹 Find Starting Point of Loop in Linked List (Medium) 🔹 Detect and Find Length of Loop in Linked List (Easy/Medium) 🔹 Check if Linked List is Palindrome (Medium) 🔹 Segregate Odd and Even Nodes in Linked List (Medium) Today’s lecture focused on advanced Linked List operations 🔗 Learned efficient loop detection, palindrome checking, and node segregation using slow-fast pointers and in-place techniques 💡 Each problem deepened my grasp of pointer manipulation and optimal transformations 💪 #StriverA2Z #TakeUForward #LinkedList #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 6 – Lecture 3 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Linked List Advanced Problems): 🔹 Middle of a Linked List [Tortoise-Hare Method] (Easy) 🔹 Reverse a Linked List [Iterative] (Easy) 🔹 Reverse a Linked List [Recursive] (Easy) 🔹 Detect a Loop in Linked List (Medium) This lecture focused on mastering linked list traversal, reversal, and loop detection 🔁💡 Understanding both iterative and recursive reversal gave deeper insight into pointer manipulation and recursion flow. #StriverA2Z #TakeUForward #LinkedList #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 6 – Lecture 2 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Doubly Linked List - Basics to Implementation): 🔹 Introduction to DLL – struct and node representation (Easy) 🔹 Insert a node in DLL (Easy) 🔹 Delete a node in DLL (Medium) 🔹 Reverse a DLL (Medium) Today’s lecture clarified the core working of Doubly Linked Lists and bidirectional node connections 🔁 Amazing session to master pointer manipulation, traversal, and bidirectional logic 💪 #StriverA2Z #TakeUForward #DSA #CPlusPlus #LinkedList #DoublyLinkedList #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 6 – Lecture 1 of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Linked List Basics): 🔹 Introduction to LinkedList – Learn about struct and how a node is represented (Easy) 🔹 Inserting a node in LinkedList (Easy) 🔹 Deleting a node in LinkedList (Medium) 🔹 Find the length of the LinkedList [Learn traversal] (Easy) 🔹 Search an element in the LinkedList (Easy) Today’s session laid the foundation of Linked Lists — understanding how nodes are connected, created, and managed in memory 🔗💡 Practicing these problems helped strengthen my concepts of pointers, traversal, and data organization in linked structures 💪 #StriverA2Z #TakeUForward #LinkedList #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 5 – Lecture 2 (Problems 4–6) of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Medium & Hard String Problems): 🔹 Implement Atoi (Medium) 🔹 Count Number of Substrings (Medium) 🔹 Longest Palindromic Substring [Do it without DP] (Hard) Today’s problems focused on string logic and precision — from implementing built-in functionality manually to finding palindromes efficiently 🔤💡 The Longest Palindromic Substring was the most challenging yet rewarding, sharpening logic building and attention to detail 💪 #StriverA2Z #TakeUForward #Strings #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 5 – Lecture 2 (Problems 1–3) of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (String Medium Problems): 🔹 Sort Characters by Frequency (Easy) 🔹 Maximum Nesting Depth of Parenthesis (Easy) 🔹 Roman Number to Integer and vice versa (Easy) These problems were fun to solve — covering character frequency sorting, parenthesis depth tracking, and Roman numeral conversion logic ✨ A perfect blend of logic, implementation, and focus on clean string manipulation 💪 #StriverA2Z #TakeUForward #Strings #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Programming

✅ Completed Step 5 – Lecture 1 (Problems 4–7) of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Basic & Easy String Problems): 🔹 Longest Common Prefix (Easy) 🔹 Isomorphic Strings (Easy) 🔹 Check if one string is a rotation of another (Medium) 🔹 Check if two strings are anagrams of each other (Medium) These problems strengthened my understanding of string pattern analysis, character mapping, and rotation/anagram logic 🔤✨ A solid mix of easy and medium questions that improved my string handling and reasoning skills 💪 #StriverA2Z #TakeUForward #Strings #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding

✅ Completed Step 5 – Lecture 1 (Problems 1–3) of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Basic & Easy String Problems): 🔹 Remove Outermost Parentheses (Easy) 🔹 Reverse Words in a String / Palindrome Check (Easy) 🔹 Largest Odd Number in a String (Easy) A smooth start to the String section, focusing on fundamentals like parentheses handling, word manipulation, and digit-based logic 🔤✨ These problems helped build better string traversal, condition checking, and implementation clarity 💪 #StriverA2Z #TakeUForward #Strings #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding

✅ Completed Step 4 – Lecture 3 (Problems 1–5) of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered (Binary Search on 2D Arrays): 🔹 Find the row with maximum number of 1’s (Easy) 🔹 Search in a 2D Matrix (Medium) 🔹 Search in a Row & Column-wise Sorted Matrix (Medium) 🔹 Find Peak Element (2D Matrix) (Hard) 🔹 Matrix Median (Hard) Today’s set elevated Binary Search to 2D, offering insights into matrix searching, peak finding, and median logic 🔍📊 These problems mixed directional thinking, search space optimization, and efficient BS in grids 💪 #StriverA2Z #TakeUForward #BinarySearch #DSA #CPlusPlus #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LearningEveryday #Consistency #LogicBuilding #Matrix #2DArrays

✅ Completed Step 4 – Lecture 2 (Problems 12–14) of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered: 🔹 Minimize Max Distance to Gas Station (Hard) 🔹 Median of 2 Sorted Arrays (Hard) 🔹 Kth Element of 2 Sorted Arrays (Medium) These problems focused on advanced Binary Search on Answers, diving deep into optimization, precision handling, and partition-based logic. Each question pushed logical thinking and implementation skills to the next level 💡 #StriverA2Z #TakeUForward #BinarySearch #DSA #CPlusPlus #ProblemSolving #CodeWithStriver #LearningEveryday #Consistency #CompetitiveProgramming #LogicBuilding #TUFWinterArc

✅ Completed Step 4 – Lecture 2 (Problems 8–11) of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered: 🔹 Aggressive Cows (Hard) 🔹 Book Allocation Problem (Hard) 🔹 Split Array – Largest Sum (Hard) 🔹 Painter’s Partition (Hard) These classic Binary Search on Answers problems focused on optimizing allocation and minimizing/maximizing resources 📚🐄 It was an amazing exercise in logical reasoning and handling boundary conditions with binary search efficiently ⚙️ #StriverA2Z #TakeUForward #BinarySearch #DSA #CPlusPlus #ProblemSolving #CodeWithStriver #LearningEveryday #Consistency #CompetitiveProgramming #LogicBuilding #TUFWinterArc

✅ Completed Step 4 – Lecture 2 (Problems 5–7) of #TUFWinterArc with @takeUforward_ (Striver Sir) 🚀 🧠 Topics Covered: 🔹 Find the smallest Divisor (Easy) 🔹 Capacity to Ship Packages within D Days (Hard) 🔹 Kth Missing Positive Number (Easy) These problems strengthened my understanding of Binary Search on answers — focusing on how to optimize search ranges and apply binary logic in real-world problem statements ⚙️📦 #StriverA2Z #TakeUForward #DSA #CPlusPlus #BinarySearch #ProblemSolving #CodingJourney #TUFWinterArc #CodeWithStriver #LogicBuilding #Consistency #LearningEveryday #CompetitiveProgramming