Simple Swift solution
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:O(m * n)\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:O(1)\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```\nclass Solution {\n    func areSimilar(_ mat: [[Int]], _ k: Int) -> Bool {\n        if mat.isEmpty { return false }\n        let m = mat.count, n = mat[0].count\n        for i in 0..<m {\n            for j in 0..<n {\n                if mat[i][j] != mat[i][(j+k) % n] { return false}\n            }\n        }\n        return true\n    }\n}\n```
['Swift']