Solution: Next Greater Element Using a Stack
Explore how to implement a function that finds the next greater number for each element in an array by using a stack. Understand the process of iterating in reverse, managing the stack to identify valid next greater elements, and learn the time and space complexity of this approach.
We'll cover the following...
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:
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arr.length