Prefix Sum | Range Sum Queries | DSA скачать в хорошем качестве

Prefix Sum | Range Sum Queries | DSA

This video explains how to solve Range Sum Queries efficiently using the Prefix Sum technique. Instead of calculating the sum for every query separately, we preprocess the array using Prefix Sum and answer each query in O(1) time. The video covers: Clear explanation of Prefix Sum concept Step-by-step solution for range sum queries Time and space complexity analysis Example walkthrough for better understanding Timestamps: 00:00 Introduction to the video 00:28 Understanding of Question through example 01:40 Solution approach to solve the problem 04:35 Example of Range Sum Query Prefix Sum, Prefix Sum Array, Range Sum Query, Range Sum Queries, Array Prefix Sum, Data Structures And Algorithms, DSA, Competitive Programming, Coding Interview Questions, Array Problems, Efficient Algorithms, Time Complexity Optimization, Preprocessing Technique, Programming Concepts #PrefixSum #RangeSumQuery #PrefixSumArray #DSA #CompetitiveProgramming #CodingInterviewPreparation #ArrayProblems #Algorithms #Programming #LearnDSA #Coding