Solution: Next Greater Element Using a Stack
Explore how to implement a next_greater_element function that finds the first greater number to the right for each element in a list. Learn to use stacks to optimize the solution with a single pass, managing candidates effectively. Understand the step-by-step approach and analyze its time and space complexity, preparing you for stack-based coding interview questions.
We'll cover the following...
We'll cover the following...
Statement
Implement a next_greater_element() function that takes a list of integers, lst, as input and returns the next greater number for every element in the list.
The next greater number for a number lst[i] is the first number to its right that is greater than lst[i]. If no such number exists, return -1 for this number.
Constraints:
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lst.length