mirror of https://github.com/coolaj86/fizzbuzz.git
77 lines
982 B
Go
77 lines
982 B
Go
package main
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import (
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"flag"
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"fmt"
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"strconv"
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)
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var max int
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var ch chan int
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func fib(a, b int) {
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//func fib(a, b int, bag []int) {
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//append(bag, a)
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ch <- a
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//fmt.Println(a)
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if b > max {
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ch <- b
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//append(bag, b)
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//fmt.Println(b)
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} else {
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fib(b, a + b)
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}
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}
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func fibloop() {
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a, b := 1, 1
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ch <- a
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ch <- b
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//fmt.Println(a)
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//fmt.Println(b)
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for b < max {
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a, b = b, a + b
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ch <- b
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//fmt.Println(b)
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}
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}
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func printStuff() {
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for {
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i := <-ch
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fmt.Println(i)
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}
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}
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func main() {
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flag.Parse()
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var e error
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ch = make(chan int)
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go printStuff()
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// stop counting once we get over 100 (or a user-set max)
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if 0 == flag.NArg() {
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max = 100
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} else {
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max, e = strconv.Atoi(flag.Args()[0])
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}
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if nil != e {
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fmt.Println("argument must be an integer")
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return
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}
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fmt.Println("recursively...")
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fib(1, 1)
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fmt.Println("")
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fmt.Println("iteratively...")
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fibloop()
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}
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