Reverse a Stack using Recursion
Get a Strong Hold DSA practice problem on Onlearn.
Difficulty: easy.
Topics: How can you reverse a stack using recursion?, Recursion, Stack, Functions, Time Complexity, Space Complexity, Big O Notation, Data Structures, in-place algorithms, recursion, call stack, stack, Stack (LIFO), In-Place Algorithms.
Problem Statement Given a stack of integers, reverse its elements using recursion. You are not allowed to use any additional data structures (like arrays, auxiliary stacks, or queues) to temporarily store elements. Input Specification The input will consist of multiple test cases. Each test case begins with a single integer N (1 <= N <= 1000), representing the number of elements in the stack. The next line contains N space separated integers, representing the elements of the stack from bottom to top. Output Specification For each test case, output the elements of the reversed stack from top to bottom, space separated. Sample Input Sample Output Explanation of Sample 1 Initial Stack (top to bottom): 4, 3, 2, 1 Reversed Stack (top to bottom): 1, 2, 3, 4 Constraints 1 <= N <= 1000 10^9 <= stack element <= 10^9