routine

26/03/169.go

@@ -0,0 +1,17 @@
+package main
+
+func majorityElement(nums []int) int {
+	a, s := nums[0], 1
+	for i := 1; i < len(nums); i++ {
+		if a == nums[i] {
+			s++
+			continue
+		}
+		s--
+		if s == 0 {
+			a = nums[i]
+			s = 1
+		}
+	}
+	return a
+}

26/03/2946.go

@@ -0,0 +1,31 @@
+package main
+
+import "fmt"
+
+func areSimilar(mat [][]int, k int) bool {
+	lenX := len(mat)
+	lenY := len(mat[0])
+	shift := k % lenY
+
+	for i := 0; i < lenX; i++ {
+		for j := 0; j < lenY; j++ {
+			next := 0
+			if i%2 == 0 {
+				next = (j + shift) % lenY
+			} else {
+				next = (j - shift + lenY) % lenY
+			}
+			if mat[i][j] != mat[i][next] {
+				return false
+			}
+		}
+	}
+
+	return true
+}
+
+func main() {
+	fmt.Println(areSimilar([][]int{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}, 4))
+	fmt.Println(areSimilar([][]int{{1, 2, 1, 2}, {5, 5, 5, 5}, {6, 3, 6, 3}}, 2))
+	fmt.Println(areSimilar([][]int{{2, 2}, {2, 2}}, 3))
+}