Go Program: Check if Two Strings are Anagrams

This Go program checks if two strings are anagrams. Two strings are considered anagrams if they contain the same characters but in different orders.

Program Structure

1. Import Packages: We import the fmt package for input and output functions.
2. Function areAnagrams: This function checks if two strings are anagrams.
3. Main Function: This function reads input from the user, calls areAnagrams, and prints the result.

Go Program Code

package main

import (
    "fmt"
    "strings"
    "sort"
)

// areAnagrams checks if two strings are anagrams
// It returns true if they are anagrams, otherwise false
func areAnagrams(str1, str2 string) bool {
    // Remove spaces and convert to lowercase
    str1 = strings.ToLower(strings.ReplaceAll(str1, " ", ""))
    str2 = strings.ToLower(strings.ReplaceAll(str2, " ", ""))

    // If lengths differ, they cannot be anagrams
    if len(str1) != len(str2) {
        return false
    }

    // Convert strings to slices of runes
    runes1 := []rune(str1)
    runes2 := []rune(str2)

    // Sort the runes
    sort.Slice(runes1, func(i, j int) bool {
        return runes1[i] < runes1[j]
    })
    sort.Slice(runes2, func(i, j int) bool {
        return runes2[i] < runes2[j]
    })

    // Compare sorted slices
    for i := range runes1 {
        if runes1[i] != runes2[i] {
            return false
        }
    }

    return true
}

func main() {
    var str1, str2 string

    fmt.Println("Enter the first string:")
    fmt.Scanln(&str1)
    
    fmt.Println("Enter the second string:")
    fmt.Scanln(&str2)
    
    if areAnagrams(str1, str2) {
        fmt.Println("The strings are anagrams.")
    } else {
        fmt.Println("The strings are not anagrams.")
    }
}
    

Explanation:

• Import Packages: The fmt package is used for reading input and printing output, while strings and sort packages help with string manipulation and sorting.
• Function areAnagrams:
  • Removes spaces and converts strings to lowercase.
  • Checks if the lengths are different; if so, they can’t be anagrams.
  • Converts the strings to slices of runes, sorts them, and compares them.
• Main Function:
  • Reads two strings from the user.
  • Calls areAnagrams to check if they are anagrams.
  • Prints the result.

The main function handles user input and output. It prompts the user to enter two strings, calls areAnagrams, and displays whether the strings are anagrams.