英文:
Tour of Go Exercise #8: Loops and Functions
问题
我正在尝试解决Go Tour的练习#8。
我的解决方案出现了一个错误信息the process to take too long。
出了什么问题？
package main
import (
"fmt"
"math"
)
func Sqrt(x float64) float64 {
guess := 1.0
i := 1
for i < 10 {
guess = guess - (math.Pow(guess, 2)-x)/(2*guess)
}
return guess
}
func main() {
fmt.Println(Sqrt(2))
}
英文:
I am trying to solve the exercise #8 of the Go Tour.
My solution fails with an error message the process to take too long
What is wrong ?
package main
import (
"fmt"
"math"
)
func Sqrt(x float64) float64 {
guess := 1.0
i := 1
for i < 10 {
guess = guess - (math.Pow(guess, 2)-x)/(2*guess)
}
return guess
}
func main() {
fmt.Println(Sqrt(2))
}
答案1
得分: 6
你在循环中没有增加i变量的值，所以它始终小于10。
//-----------v
for ; i < 10; i++ {
guess = guess - (math.Pow(guess, 2)-x)/(2*guess)
}
英文:
You're not incrementing the i variable in your loop, so it's always < 10.
//-----------v
for ; i < 10; i++ {
guess = guess - (math.Pow(guess, 2)-x)/(2*guess)
}
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