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모래시계 - 알고리즘티끌모아 연산 2019. 4. 18. 11:17
https://www.hackerrank.com/challenges/2d-array/problem?h_l=interview&playlist_slugs%5B%5D=interview-preparation-kit&playlist_slugs%5B%5D=arrays 2D Array - DS | HackerRank How to access and use 2d-arrays. www.hackerrank.com Problem Given a 2D Array, : 1 1 1 0 0 0 0 1 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 We define an hourglass in to be a subset of values with indices falling in ..