英文:
Iterating over Go string to extract specific substrings
问题
我开始学习Go，并且想要实现一些算法。我想要遍历一个字符串，然后提取一些子字符串，例如：p -(40) *(GOT) +(FF) 应该返回一个类似这样的数组：
。
我写了一些代码，但是有点模糊：
import ("strings")func find(input string){var result []stringa := strings.SplitN(input, "-(", 2)result[0] = a[0]b := strings.SplitN(a[1], ") *(", 2)result[1] = b[0]c := strings.SplitN(a[1], ") +(", 2)result[2] = c[0]d := strings.SplitN(a[1], ")", 2)result[3] = d[0]}
有人可以纠正我或者提供更简单的方法吗？谢谢！
英文:
I started learning Go and I want to implement some algorithm.
I want to iterate over a string and then extract some substrings for example : p -(40) *(GOT) +(FF)
should return an array like this:
I wrote something like this but it's vague:
<!-- language: lang-golang -->
import ("strings")func find(input string){var result []stringa := strings.SplitN(input, "-(", 2);result[0] = a[0]b := strings.SplitN(a[1], ") *(", 2)result[1] = b[0]c := strings.SplitN(a[1], ") +(", 2)result[2] = c[0]d := strings.SplitN(a[1], ")", 2)result[3] = d[0]}
Can someone please correct me or suggest something easier? Thanks!
答案1
得分: 1
你可以使用strings.FieldsFunc函数，像下面这个示例代码一样：
package mainimport "fmt"import "strings"func find(input string) []string {return strings.FieldsFunc(input, split)}func main() {strs := find("p -(40) *(GOT) +(FF)")str := strings.Replace(fmt.Sprint(strs), " ", ", ", -1)fmt.Println(str)}func split(r rune) bool {return r == ' ' || r == '-' || r == '(' || r == ')' || r == '*' || r == '+'}
输出结果为：
你也可以使用strings.Fields和strings.Trim函数，像下面这个示例代码一样：
package mainimport "fmt"import "strings"func main() {fmt.Println(find("p -(40) *(GOT) +(FF)"))}func find(input string) []string {strs := strings.Fields(input)result := make([]string, 0, len(strs))for _, v := range strs {s := strings.Trim(v, "()+-*")if len(s) > 0 {result = append(result, s)}}return result}
输出结果为：
对于你的特殊情况，也可以使用下面这个示例代码：
package mainimport "fmt"import "strings"func main() {fmt.Println(find("p -(40) *(GOT) +(FF)"))}func find(input string) []string {strs := strings.Fields(input)for i := 0; i < len(strs); i++ {strs[i] = strings.Trim(strs[i], "()+-*")}return strs}
输出结果为：
如果你需要输出形如
的字符串，可以尝试下面这个示例代码：
package mainimport "fmt"import "strings"func main() {strs := find("p -(40) *(GOT) +(FF)")str := strings.Replace(fmt.Sprint(strs), " ", ", ", -1)fmt.Println(str)}func find(input string) []string {strs := strings.Fields(input)for i := 0; i < len(strs); i++ {strs[i] = strings.Trim(strs[i], "()+-*")}return strs}
输出结果为：
英文:
You may use strings.FieldsFunc, like this working sample code:
<!-- language: lang-golang -->
package mainimport "fmt"import "strings"func find(input string) []string {return strings.FieldsFunc(input, split)}func main() {strs := find("p -(40) *(GOT) +(FF)")str := strings.Replace(fmt.Sprint(strs), " ", ", ", -1)fmt.Println(str)}func split(r rune) bool {return r == ' ' || r == '-' || r == '(' || r == ')' || r == '*' || r == '+'}
output:
You may use strings.Fields then strings.Trim, like this working sample code:
<!-- language: lang-golang -->
package mainimport "fmt"import "strings"func main() {fmt.Println(find("p -(40) *(GOT) +(FF)"))}func find(input string) []string {strs := strings.Fields(input)result := make([]string, 0, len(strs))for _, v := range strs {s := strings.Trim(v, "()+-*")if len(s) > 0 {result = append(result, s)}}return result}
output:
Also this works for your special case:
<!-- language: lang-golang -->
package mainimport "fmt"import "strings"func main() {fmt.Println(find("p -(40) *(GOT) +(FF)"))}func find(input string) []string {strs := strings.Fields(input)for i := 0; i < len(strs); i++ {strs[i] = strings.Trim(strs[i], "()+-*")}return strs}
output:
And if you need output like this string:
, try this working sample code:
<!-- language: lang-golang -->
package mainimport "fmt"import "strings"func main() {strs := find("p -(40) *(GOT) +(FF)")str := strings.Replace(fmt.Sprint(strs), " ", ", ", -1)fmt.Println(str)}func find(input string) []string {strs := strings.Fields(input)for i := 0; i < len(strs); i++ {strs[i] = strings.Trim(strs[i], "()+-*")}return strs}
output:
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论