Step by Step solution about How to resolve the algorithm Palindrome detection step by step in the Julia programming language

The provided Julia code defines three different functions named palindrome to check if a given string s is a palindrome. A palindrome is a string that reads the same forward and backward. Here's a detailed explanation of each function:

1. First Function:

   palindrome(s) = s == reverse(s)

   This function takes a string s as input and returns a boolean value indicating whether s is a palindrome. It uses Julia's built-in == operator to compare the original string s with its reversed version reverse(s). If the two strings are equal, it means the string is a palindrome and the function returns true. Otherwise, it returns false.

2. Second Function:

   function palindrome(s)
      len = length(s)
      for i = 1:(len/2)
          if(s[len-i+1]!=s[i])
              return false
          end
      end
      return true
   end

   This function also takes a string s as input. It first calculates the length of the string len using the length function. Then, it iterates through the first half of the string (up to len/2) using a for loop. Inside the loop, it compares each character at position i with its corresponding character at position len-i+1. If any pair of characters doesn't match, it means the string is not a palindrome, and the function returns false. If the loop completes without finding any mismatched characters, it means the string is a palindrome, and the function returns true.

3. Third Function:

   function palindrome(s)
      len = length(s)
      if(len==0 || len==1)
          return true
      end
      if(s[1] == s[len])
          return palindrome(SubString(s,2,len-1))
      end
      return false
   end

   This function uses a recursive approach to check if a string s is a palindrome. It first checks if the string is empty or has only one character, in which case it returns true because empty strings and single-character strings are considered palindromes.

   If neither of those conditions is met, it compares the first and last characters of the string. If they match, the function recursively calls itself with a substring of s excluding the first and last characters (i.e., SubString(s,2,len-1)). This recursive process continues until the substring becomes empty or has only one character, at which point the function returns true. If the first and last characters don't match, the function returns false.

palindrome(s) = s == reverse(s)

function palindrome(s)
    len = length(s)
    for i = 1:(len/2)
        if(s[len-i+1]!=s[i])
            return false
        end
    end
    return true
end

function palindrome(s)
    len = length(s)
    if(len==0 || len==1)
        return true
    end
    if(s[1] == s[len])
        return palindrome(SubString(s,2,len-1))
    end
    return false
end