Reverse Words in a String | Top Interview Question 🔥 | LeetCode 75 #6

Reverse Words in a String — LeetCode 151 (Medium), explained from ZERO in Hindi. In this video we reverse the order of words in a string AND clean up the spaces — leading, trailing and multiple spaces — all in-place, with O(1) extra space. What you will learn: What a "word" means here (longest run of non-space characters) All 3 LeetCode examples, animated The naive idea: split + filter + reverse + join (and why C++ has no split) The optimal 3-phase trick: reverse the whole string, reverse each word, clean spaces with two pointers i and j A full animated dry run on "a good example" C++ code line by line — every syntax explained (std::reverse, isspace, cctype header, while loops, s.resize) Edge cases: only spaces, single word, already-clean string, empty string Time O(n), extra space O(1) Practice here: https://leetcode.com/problems/reverse... This is video #6 of the LeetCode 75 series in Hindi — 3D animated, beginner-first, every line explained. #LeetCode #LeetCode75 #DSAinHindi #CodingInterview #Placements #CPlusPlus #TwoPointers #StringManipulation #ReverseWordsInAString #LearnDSA