Immediate Smaller Element | GeeksforGeeks Solution | C++ Implementation
Welcome to my channel! In this video, I'll walk you through the solution to the "Immediate Smaller Element" problem from GeeksforGeeks. We'll explore the problem statement, break down the logic, and implement the solution step-by-step in C++.
🔗 Solution Repository: https://github.com/rajmahto/GeeksforG...
📜 Problem Statement:
Given an array of positive integers, replace every element with the next immediate smaller element to its right. If no such element exists, replace it with -1.
Examples:
Example 1:
Input: arr = [4, 2, 1, 5, 3]
Output: 2 1 -1 3 -1
Explanation: For each element, the next smaller element to its right is replaced. If no such element exists, it is replaced with -1.
Example 2:
Input: arr = [5, 6, 8, 9]
Output: -1 -1 -1 -1
Explanation: No element in the array has a smaller element to its right, so each element is replaced with -1.
Expected Time Complexity: O(n)
Expected Auxiliary Space: O(1)
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