20201114

20201114/main.go

@@ -0,0 +1,23 @@
+package main
+
+import "fmt"
+
+var steps = []int{1, 2}
+
+func main() {
+	fmt.Println("count:", climbingStairs(100, steps))
+}
+
+func climbingStairs(n int, step []int) int {
+	if n <= 1 {
+		return 1
+	}
+	pre1 := 1
+	pre2 := 1
+	for i := 2; i <= n; i++ {
+		cur := pre1 + pre2
+		pre2 = pre1
+		pre1 = cur
+	}
+	return pre1
+}

20201114/main_test.go

@@ -0,0 +1,33 @@
+package main
+
+import "testing"
+
+func Test_climbingStairs(t *testing.T) {
+	type args struct {
+		n    int
+		step []int
+	}
+	tests := []struct {
+		name string
+		args args
+		want int
+	}{
+		{
+			"1",
+			args{2, []int{1, 2}},
+			2,
+		},
+		{
+			"3",
+			args{3, []int{1, 2}},
+			3,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := climbingStairs(tt.args.n, tt.args.step); got != tt.want {
+				t.Errorf("climbingStairs() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}