yshshrm / Data-Structures-And-Algorithms-Hacktoberfest18

List of data structures and algorithms. Feel free to contribute under Hacktoberfest '18!
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Create PaintingFenceAlgo #1493

Open anahita-singla opened 5 years ago

anahita-singla commented 5 years ago

Given a fence with n posts and k colors, find out the number of ways of painting the fence such that at most 2 adjacent posts have the same color. Since answer can be large return it modulo 10^9 + 7.