LeetCode 70: Climbing Stairs | Asked in TCS NQT, Wipro, Zoho | Dynamic Programming Tutorial in Java

🚀 Climbing Stairs LeetCode #70 | TCS NQT Dynamic Programming Problem | Java Solution | Placement Prep 2026 In this video, we solve LeetCode problem #70 "Climbing Stairs" using Dynamic Programming – one of the MOST ASKED DSA problems in TCS NQT, Infosys, Wipro, Accenture, Amazon, and Zoho coding rounds! Learn the optimal O(n) time, O(1) space solution in Java with step-by-step explanation perfect for placement preparation 2026/2027. 🔑 What You'll Learn: ✅ Problem statement explained with real-life analogy ✅ Why recursion alone fails (and causes TLE in interviews) ✅ Memoization (Top-Down DP) approach with code ✅ Tabulation (Bottom-Up DP) approach – optimal solution ✅ Space-optimized Fibonacci-style solution O(1) space ✅ Dry run with examples + edge cases ✅ Time & Space Complexity analysis (O(n) time, O(1) space) ✅ How this pattern appears in TCS NQT, Wipro, Infosys coding tests 📌 Problem Link: https://leetcode.com/problems/climbing-stairs/ ⏱️ Timestamps: 00:00 - Intro & Problem Statement 01:30 - Brute Force Recursion (Why it fails) 03:45 - Memoization Approach (Top-Down DP) 06:20 - Tabulation Approach (Bottom-Up DP) ✅ OPTIMAL 09:10 - Space Optimized Solution (Fibonacci Trick) 11:30 - Dry Run + Edge Cases 13:00 - TCS NQT / Placement Interview Tips 14:20 - Similar DP Problems to Practice 📢 Join the InfoTechiezz Community: 🔔 Subscribe for daily DSA + Placement content: https://www.youtube.com/@InfoTechiezz 📌 About InfoTechiezz: On this channel, we regularly upload: • DSA problem-solving videos (LeetCode, GFG, HackerRank) • Coding interview preparation for Indian MNCs • Live coding sessions & contest walkthroughs • Placement guidance for TCS, Wipro, Infosys, Accenture, Zoho, Amazon • Competitive programming tips for beginners to advanced • Practice questions with optimized Java/Python/C++ solutions If you are preparing for placements in 2026 or 2027, subscribe and hit the bell icon 🔔 to stay updated! #ClimbingStairs #LeetCode70 #DynamicProgramming #DSA #TCSNQT #PlacementPrep #Java #CodingInterview #InfoTechiezz #LeetCodeSolutions #DPProblems #TCSPlacement #InfosysCoding #WiproPrep #AccentureDrive #AmazonInterview #ZohoCoding #CompetitiveProgramming #DataStructures #Algorithms #PlacementPreparation2026 #PlacementPreparation2027 #JavaProgramming #CodingTips #DPTricks #FibonacciPattern #OptimalSolution #CampusPlacements #ServiceBasedCompanies #ProductBasedCompanies #ProgrammingInIndia #LeetCodeIndia #InfoTechiezzCommunity climbing stairs leetcode, leetcode 70, climbing stairs problem, dynamic programming tutorial, dp problems for placements, tcs nqt coding questions, tcs nqt dynamic programming, infosys coding questions, wipro coding round, accenture coding test, amazon interview questions, zoho coding problems, java dsa tutorial, java dynamic programming, leetcode solutions in java, placement preparation 2026, placement preparation 2027, competitive programming india, dp tricks, fibonacci pattern leetcode, memoization vs tabulation, space optimized dp, climbing stairs java solution, leetcode 70 java, tcs digital coding, campus placements india, service based company prep, product based company interview, programming interview questions, coding interview preparation, data structures and algorithms java, infoTechiezz