斐波那契数列-Golang闭包Demo

fibonacci_closure.go

package main

import "fmt"

func main() {
	f := fibonacci()
	for i:=0; i<10; i++ {
		fmt.Println(f())
	}
}

// 斐波那契数列(闭包)
func fibonacci() func() int {
	n := 1
    j := 0
	return func() int {
		k := n + j
		n,j =  j,k
		return k
	}
}

//output:

1
1
2
3
5
8
13
21
34
55