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
+}