|
|
|
@ -1,12 +1,12 @@
|
|
|
|
|
package main
|
|
|
|
|
|
|
|
|
|
import (
|
|
|
|
|
"crypto/rand"
|
|
|
|
|
"fmt"
|
|
|
|
|
"math"
|
|
|
|
|
"math/big"
|
|
|
|
|
"math/rand"
|
|
|
|
|
"os"
|
|
|
|
|
"strconv"
|
|
|
|
|
"time"
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
import (
|
|
|
|
@ -21,7 +21,9 @@ func main() {
|
|
|
|
|
os.Exit(1)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
nflips, err := strconv.ParseInt(os.Args[1], 10, 32)
|
|
|
|
|
rand.Seed(time.Now().UTC().UnixNano())
|
|
|
|
|
|
|
|
|
|
nflips, err := strconv.Atoi(os.Args[1])
|
|
|
|
|
if err != nil {
|
|
|
|
|
fmt.Println("Wat.", err)
|
|
|
|
|
os.Exit(2)
|
|
|
|
@ -30,16 +32,8 @@ func main() {
|
|
|
|
|
heads := algs4.NewCounter("heads")
|
|
|
|
|
tails := algs4.NewCounter("tails")
|
|
|
|
|
|
|
|
|
|
randMax := big.NewInt(2)
|
|
|
|
|
|
|
|
|
|
for t := int64(0); t < nflips; t += int64(1) {
|
|
|
|
|
n, err := rand.Int(rand.Reader, randMax)
|
|
|
|
|
if err != nil {
|
|
|
|
|
fmt.Println("Ugh:", err)
|
|
|
|
|
os.Exit(4)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if n.Int64() < 1 {
|
|
|
|
|
for t := 0; t < nflips; t++ {
|
|
|
|
|
if rand.Float64() > 0.5 {
|
|
|
|
|
heads.Increment()
|
|
|
|
|
} else {
|
|
|
|
|
tails.Increment()
|
|
|
|
|