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Minimum Cost to Paint Houses with K Colors

A builder plans to construct N houses in a row, where each house can be painted in K different colors. The goal is to minimize the total painting cost, ensuring that no two adjacent houses have the same color.

March 9, 2025 | Data Structure, dsa, Facebook | No comments

Count Decoding Ways for Encoded Messages

Problem Statement (Asked By Facebook) Given the mapping a = 1, b = 2, …, z = 26, and an encoded message, count the number of possible ways to decode it. For example, the message ‘111’ would give 3, since it could be decoded as ‘aaa’, ‘ka’, and ‘ak’. You can assume that the messages […]

January 5, 2025 | DP, dsa, DSA Sheet, Facebook | No comments

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