Search⌘ K
Home
Courses
Data Structures for Coding Interviews in Java

Solution: Next Greater Element Using a Stack

Explore the next greater element problem and learn to implement it using a stack in Java. Understand the step-by-step approach to finding the first greater element to the right for each array element, optimizing with O(n) time complexity. This lesson helps you grasp stack operations and their practical application in algorithm design.

We'll cover the following...

Statement

Implement a nextGreaterElement() function that takes an array of integers, arr, as input and returns the next greater number for every element in the array.

The next greater number for a number arr[i] is the first number to its right that is greater than arr[i]. If no such number exists, return -1 for this number.

Constraints:

  • 1≤1 \leq arr.length ≤103\leq 10^{3}
...