Next Greater Element Variant | Dataford Interview Questions

Solve a variant of the Next Greater element to the Right (NGR) problem using a stack.

Asked in the HLD/LLD round stage. DSA problem after the concurrency question.

Problem

Given an array of integers nums, return an array result where result[i] is the first element to the right of nums[i] that is strictly greater than nums[i]. If no such element exists, set result[i] = -1.

Function Contract

nums is a list of integers. Return a list of integers of the same length.

Constraints

1 <= len(nums) <= 10^5
-10^9 <= nums[i] <= 10^9
Return an array of the same length as nums
Use a stack-based solution

Function Signature

def next_greater_right(nums):

Your question is Next Greater Element Variant. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Solve a variant of the Next Greater element to the Right (NGR) problem using a stack.

Asked in the HLD/LLD round stage. DSA problem after the concurrency question.

Problem

Function Contract

nums is a list of integers. Return a list of integers of the same length.

Constraints

1 <= len(nums) <= 10^5
-10^9 <= nums[i] <= 10^9
Return an array of the same length as nums
Use a stack-based solution

Function Signature

def next_greater_right(nums):

Your question is Next Greater Element Variant. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.