Step by Step solution about How to resolve the algorithm Multisplit step by step in the Go programming language

This Go program demonstrates how to split a string using multiple separators. Here's a detailed explanation:

1. Package Declaration: The program starts with the package main declaration, indicating that this is the main program package.

2. Import Statements: It imports the following standard libraries:

   • "fmt": For input and output operations.
   • "strings": For string manipulation functions.

3. ms Function:

   • Arguments: The ms function takes two arguments:
     • txt: The input string to be split.
     • sep: A slice of separator strings to use for splitting.
   • Functionality: It splits the input string txt into a slice of strings ([]string) based on any of the separators in the sep slice. The function works as follows:
     • It iterates over the input string txt until it becomes empty.
     • Inside the loop, it finds the first matching separator from the sep slice in the remaining txt string. It keeps track of the matching separator (sepMatch) and the position of its first occurrence (posMatch).
     • It appends the text before the matching separator to the resulting slice (ans).
     • It updates txt by removing the portion that has been added to the result, including the matching separator.
   • Return Value: The ms function returns the slice of strings ([]string) containing the split parts of the input string.

4. main Function:

   • Functionality: This is the entry point of the program. It calls the ms function to demonstrate how to split a string using multiple separators:
     • It splits the string "a!===b=!=c" using the separators slice []string{"==", "!=", "="}.
     • The resulting slice of strings is printed using fmt.Printf.

5. Program Output: The program prints the resulting slice of strings: ["a", "b", "c"]. This shows that the input string has been split into three parts at the occurrences of the specified separators.

package main

import (
    "fmt"
    "strings"
)

func ms(txt string, sep []string) (ans []string) {
    for txt > "" {
        sepMatch := ""
        posMatch := len(txt)
        for _, s := range sep {
            if p := strings.Index(txt, s); p >= 0 && p < posMatch {
                sepMatch = s
                posMatch = p
            }
        }
        ans = append(ans, txt[:posMatch])
        txt = txt[posMatch+len(sepMatch):]
    }
    return
}

func main() {
    fmt.Printf("%q\n", ms("a!===b=!=c", []string{"==", "!=", "="}))
}