Pass the Pillow | 2 Approaches | Easy Explanations | Leetcode 2582 | codestorywithMIK
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This is the 46th Video of our Playlist "Leetcode Easy : Popular Interview Problems" by codestorywithMIK
In this video we will try to solve a good practice problem : Pass the Pillow | 2 Approaches | Easy Explanations | Leetcode 2582 | codestorywithMIK
I will explain the intuition so easily that you will never forget and start seeing this as cakewalk EASYYY.
We will do live coding after explanation and see if we are able to pass all the test cases.
Also, please note that my Github solution link below contains both C++ as well as JAVA code.
Problem Name : Pass the Pillow | 2 Approaches | Easy Explanations | Leetcode 2582 | codestorywithMIK
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Summary :
Approach 1 (Simple Simulation)
Time Complexity: O(time)
Space Complexity: O(1)
Description: This approach simulates the passing of the pillow in real-time. We maintain two variables, idx for the current position and dir for the direction (either forward or backward). As long as there is remaining time, we update the position and direction based on the current state, decrementing the time with each step until the time runs out. This approach is straightforward but may be inefficient for large time values due to its linear complexity.
Approach 2 (Simple Maths)
Time Complexity: O(1)
Space Complexity: O(1)
Description: This approach uses mathematical calculations to determine the final position without simulating each step. It calculates the number of full rounds of passing the pillow (totalFullRounds) and the remaining time (timeLeft). Depending on whether the number of full rounds is even or odd, it adjusts the final position accordingly. This method is highly efficient with constant time complexity, making it suitable for larger inputs.
✨ Timelines✨
00:00 - Introduction
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