add new solutions

solutions/29/q2946/solution.go

@@ -0,0 +1,27 @@
+// Package q2946 implements a solution for https://leetcode.com/problems/matrix-similarity-after-cyclic-shifts/
+package q2946
+
+func areSimilar(mat [][]int, k int) bool {
+	w := len(mat[0])
+	k %= w
+	if k == 0 {
+		return true
+	}
+
+	for r := range mat {
+		for c := range w {
+			var shifted int
+			if r%2 == 0 {
+				shifted = (c + k) % w
+			} else {
+				shifted = (c + w - k) % w
+			}
+			if mat[r][shifted] != mat[r][c] {
+				return false
+			}
+		}
+	}
+	return true
+}
+
+var _ = areSimilar