Go Lychrel的数字与大图书馆相匹配
我正试图在围棋中制作一个Lychrel数字程序,但我遇到了一些麻烦。使用“math/big”库,并使用一些额外的打印语句进行调试,我的代码如下所示:Go Lychrel的数字与大图书馆相匹配,go,reverse,lychrel-numbers,Go,Reverse,Lychrel Numbers,我正试图在围棋中制作一个Lychrel数字程序,但我遇到了一些麻烦。使用“math/big”库,并使用一些额外的打印语句进行调试,我的代码如下所示: func reverse(n *big.Int) *big.Int { var ( m = n r = big.NewInt(0) z = big.NewInt(0) one = big.NewInt(1) ten = big.NewInt(10)
func reverse(n *big.Int) *big.Int {
var (
m = n
r = big.NewInt(0)
z = big.NewInt(0)
one = big.NewInt(1)
ten = big.NewInt(10)
)
for {
r.Mul(r, ten)
d := z
d.Mod(m, ten)
r.Add(r, d)
m.Div(m, ten)
if m.Cmp(one) == -1 {
return r
}
}
}
func radd(num *big.Int) *big.Int {
newNum := num
rnum := reverse(num)
newNum = newNum.Add(num, rnum)
fmt.Println(num, "+", rnum, "=", newNum)
return newNum
}
func lychrel(arg int) bool {
fmt.Println("Now testing", arg)
num := big.NewInt(int64(arg))
for i := 0; i < 50; i++ {
num = radd(num)
fmt.Println(i, ":", num)
if num.Cmp(reverse(num)) == 0 {
return false
}
}
return true
}
我不知道哪里出了问题。我希望我没有错过什么愚蠢的事情,因为我花了一个上午的时间试图让它发挥作用
NewInt分配并返回一个新的Int集到x
将z设置为x并返回z
您正在分配指针,而不是值
m = n
newNum := num
赋值
m = new(big.Int).Set(n)
newNum := new(big.Int).Set(num)
比如说,
package main
import (
"fmt"
"math/big"
)
func reverse(n *big.Int) *big.Int {
var (
m = new(big.Int).Set(n)
r = big.NewInt(0)
z = big.NewInt(0)
one = big.NewInt(1)
ten = big.NewInt(10)
)
for {
r.Mul(r, ten)
d := z
d.Mod(m, ten)
r.Add(r, d)
m.Div(m, ten)
if m.Cmp(one) == -1 {
return r
}
}
}
func radd(num *big.Int) *big.Int {
newNum := new(big.Int).Set(num)
rnum := reverse(num)
newNum = newNum.Add(num, rnum)
fmt.Println(num, "+", rnum, "=", newNum)
return newNum
}
func lychrel(arg int) bool {
fmt.Println("Now testing", arg)
num := big.NewInt(int64(arg))
for i := 0; i < 50; i++ {
num = radd(num)
fmt.Println(i, ":", num)
if num.Cmp(reverse(num)) == 0 {
return false
}
}
return true
}
func main() {
lychrel(196)
}
func (z *Int) Set(x *Int) *Int
m = n
newNum := num
m = new(big.Int).Set(n)
newNum := new(big.Int).Set(num)
package main
import (
"fmt"
"math/big"
)
func reverse(n *big.Int) *big.Int {
var (
m = new(big.Int).Set(n)
r = big.NewInt(0)
z = big.NewInt(0)
one = big.NewInt(1)
ten = big.NewInt(10)
)
for {
r.Mul(r, ten)
d := z
d.Mod(m, ten)
r.Add(r, d)
m.Div(m, ten)
if m.Cmp(one) == -1 {
return r
}
}
}
func radd(num *big.Int) *big.Int {
newNum := new(big.Int).Set(num)
rnum := reverse(num)
newNum = newNum.Add(num, rnum)
fmt.Println(num, "+", rnum, "=", newNum)
return newNum
}
func lychrel(arg int) bool {
fmt.Println("Now testing", arg)
num := big.NewInt(int64(arg))
for i := 0; i < 50; i++ {
num = radd(num)
fmt.Println(i, ":", num)
if num.Cmp(reverse(num)) == 0 {
return false
}
}
return true
}
func main() {
lychrel(196)
}
Now testing 196
196 + 691 = 887
0 : 887
. . .