Given an array of integers that can be in any order, you need to return the index of the next greater element to the right of every element. A very fun problem to solve as soon as you visualize the correct data structure to use. A stack comes in very handy whenever you see a nested loop, or you need to iterate from the backward direction again and again. Watch the video to understand the concept and the approach along with a dry-run of code in JAVA.
Actual problem on LeetCode: https://leetcode.com/problems/next-gr...
Chapters:
00:00 - Intro
00:59 - Problem statement and description
03:37 - A Brute Force approach to find the Next Greater Element
06:51 - Efficient Way to find the Next Greater Element
11:42 - Dry-run of Code
14:06 - Final Thoughts
📚 Links to topics I talk about in the video:
Stack Data Structure: • Stack Data Structure explained with a...
Arrays: • Array Data Structure explained with V...
LeetCode Solutions: • Leetcode Solutions
What is Big O?: • Big O Notation Simplified to the MAX ...
📘 A text based explanation is available at: https://studyalgorithms.com
Code on Github: https://github.com/nikoo28/java-solut...
Test-cases on Github: https://github.com/nikoo28/java-solut...
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Starting Learn to Code: https://amzn.to/36pU0JO
Favorite book to understand algorithms: https://amzn.to/39w3YLS
Favorite book for data structures: https://amzn.to/3oAVBTk
Get started for interview preparation: https://amzn.to/39ysbkJ
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