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

The first section of code shows how to manipulate strings in Go using the built-in strings package. It demonstrates various string operations such as converting to upper case, lower case, title case, and swapping case. It also provides a practical example of handling special characters and diacritics in strings.

Here's a detailed breakdown of the code:

• Importing the strings Package:

  import "strings"

  This line imports the strings package, which provides various functions for manipulating strings in Go.

• Defining the show Function:

  func show(s string) {
     // ...
  }

  The show function takes a string s as input and performs various string operations on it.

• Outputting String Information:

  fmt.Println("\nstring:         ",
     s, " len:", utf8.RuneCountInString(s), "runes")

  This line prints the original string s, along with its length in terms of runes (Unicode code points).

• Converting to Upper Case:

  fmt.Println("All upper case: ", strings.ToUpper(s))

  This line converts the string s to uppercase and prints the result.

• Converting to Lower Case:

  fmt.Println("All lower case: ", strings.ToLower(s))

  This line converts the string s to lowercase and prints the result.

• Converting to Title Case:

  fmt.Println("All title case: ", strings.ToTitle(s))

  This line converts the string s to title case, where each word begins with an uppercase letter, and prints the result.

• Title Words:

  fmt.Println("Title words:    ", strings.Title(s))

  This line is similar to ToTitle but only capitalizes the first word in the string s.

• Swapping Case:

  fmt.Println("Swapping case:  ",
     strings.Map(unicode.SimpleFold, s))

  This line uses the Map function to swap the case of each character in the string s. The unicode.SimpleFold function is used to perform case folding, which maps characters to their case-folded equivalents.

In the second section of the code, the focus is on handling special characters in strings. Unicode strings are used to represent characters with diacritics and other special symbols.

• Defining Strings with Special Characters:

  a := "Stroßbùrri"
  b := "ĥåçýджк"

  These lines define two strings, a and b, containing special characters, diacritics, and non-Latin characters.

• Converting to Upper Case:

  fmt.Println(strings.ToUpper(a))
  fmt.Println(strings.ToUpper(b))

  These lines convert the strings a and b to uppercase and print the results. It's important to note that, unlike ASCII strings, Unicode strings may not always convert to uppercase as expected due to the complexities of Unicode character mappings.

package main

import (
    "fmt"
    "strings"
    "unicode"
    "unicode/utf8"
)

func main() {
    show("alphaBETA")
    show("alpha BETA")
    // Three digraphs that should render similar to DZ, Lj, and nj.
    show("DŽLjnj")
    // Unicode apostrophe in third word.
    show("o'hare O'HARE o’hare don't")
}

func show(s string) {
    fmt.Println("\nstring:         ",
        s, " len:", utf8.RuneCountInString(s), "runes") // DZLjnj
    fmt.Println("All upper case: ", strings.ToUpper(s)) // DZLJNJ
    fmt.Println("All lower case: ", strings.ToLower(s)) // dzljnj
    fmt.Println("All title case: ", strings.ToTitle(s)) // DzLjNj
    fmt.Println("Title words:    ", strings.Title(s))   // Dzljnj
    fmt.Println("Swapping case:  ",                     // DzLjNJ
        strings.Map(unicode.SimpleFold, s))
}


package main

import (
  "fmt"
  "strings"
)

func main() {
  a := "Stroßbùrri"
  b := "ĥåçýджк"
  fmt.Println(strings.ToUpper(a))
  fmt.Println(strings.ToUpper(b))
}
}