LeetCode 334 - Increasing Triplet Subsequence Explained in C++ | Greedy Algorithm

In this video, we solve LeetCode Problem 334: Increasing Triplet Subsequence using C++. We cover: Greedy Algorithm Tracking minimum and middle elements Finding an increasing triplet efficiently Step-by-step dry run Optimized O(n) solution Time and Space Complexity Analysis Example Input: nums = 1,2,0,3 Output: true Because: 1 2 3 An increasing triplet subsequence exists. Key Idea Instead of checking all possible triplets, we maintain: first = smallest element seen so far second = smallest element greater than first If we ever find: current second then we have: first second current and the answer is immediately true. This clever greedy approach solves the problem in O(n) time with O(1) extra space. Problem LeetCode 334 - Increasing Triplet Subsequence Language Used C++ What You'll Learn ✅ Greedy Pattern ✅ Array Traversal Optimization ✅ O(n) Solution Design ✅ Interview Problem-Solving Techniques If you enjoyed the video, make sure to: 👍 Like 💬 Comment 🚀 Subscribe More LeetCode videos coming daily! #leetcode #cpp #dsa #greedy #arrays #programming #codinginterview #leetcode334 #increasingtriplet #cplusplus #algorithms #interviewprep