Скачать или смотреть LeetCode Daily: 2 Keys Keyboard Solution in Java | August 19, 2024

🔍 LeetCode Problem of the Day: 2 Keys Keyboard

Today, we're diving into the "2 Keys Keyboard" problem in Java, featured in the LeetCode daily challenge series. The problem involves determining the minimum number of steps to achieve n 'A's on the screen using only copy-paste operations.

👉 Problem Link: https://leetcode.com/problems/2-keys-...
👉 Solution: Pinned on the comments

🌟 Problem Description:
In this challenge, you need to calculate the minimum number of operations required to obtain exactly n 'A's on the screen using only two operations: Copy All and Paste. The trick is to recognize that the problem can be reduced to finding the sum of the prime factors of n.

🔑 Code Explanation:
Prime Factorization: The solution hinges on the idea that each operation can be broken down into its prime factors, which corresponds to the minimum steps needed.
sumOfPrimeFactors Function: This helper function computes the sum of all prime factors of n, which effectively gives the minimum number of steps required to reach n 'A's.
Main Function: If n equals 1, no steps are needed. Otherwise, the sum of the prime factors provides the result.

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