Question

How to get the substring between two substrings in Go

Answer 1

package main

import (
	"fmt"
	"strings"
)

func SubstringBetweenTwoSubstrings(str, suba, subb string) string {
	posA := strings.Index(str, suba)
	posB := strings.LastIndex(str, subb)

	if posA == -1 {
		return ""
	}

	if posB == -1 {
		return ""
	}

	indexEndSuba := posA + len(suba)
	if indexEndSuba >= posB {
		return ""
	}

	return str[indexEndSuba:posB]
}

func main() {
	str := "Go:C#:C C++:Java:Python"

	fmt.Println(SubstringBetweenTwoSubstrings(str, "C#", "Java"))
}


/*
run:

:C C++:

*/

 

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