Python Coding Practice

Solve Next Greater Element using Python Language

Solve Next Greater Element using Python to enhance your skills with python coding practice , master coding concepts, and prepare for interviews with practical exercises and detailed solutions.

Next Greater Element

Difficulty : Medium

Categories :

  • Arrays

Given an array of integers, find the next greater element for each element. The next greater element is the first greater element on the right side of the current element. If no greater element exists, use -1.

Constraints:

  • 1 ≤ arr.length ≤ 10⁵
  • -10⁹ ≤ arr[i] ≤ 10⁹

Examples:

Input: [4,5,2,10,8]
Output: [5,10,10,-1,-1]
Explanation:
4 -> 5 (next greater)
5 -> 10 (next greater)
2 -> 10 (next greater)
10 -> -1 (no greater)
8 -> -1 (no greater)
Input: [2,1,2,4,3]
Output: [4,2,4,-1,-1]
Explanation:
2 -> 4
1 -> 2
2 -> 4
4 -> -1
3 -> -1

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