Duplicate Encoder

Problem

Example:

Notes:

Solution

1. Each character in the new string will be replaced with "(" if that character appears only once in the original string.
2. If a character appears more than once in the original string, it will be replaced with ")" in the new string.

• Capitalization differences should be ignored. This means that uppercase and lowercase letters are considered the same. So, "A" and "a" are treated as the same character.
• Spaces or non-alphabetic characters should be ignored in the counting. Only alphabetic characters are considered.

• Original string: "din", converted string: "(((" because all characters ("d", "i", and "n") appear only once.
• Original string: "recede", converted string: "()()()" because the character "e" appears three times, while the other characters appear only once.
• Original string: "Success", converted string: ")())())" because the character "s" appears three times, the character "c" appears twice, and the other characters appear only once.
• Original string: "(( @", converted string: "))((" because the character "(" appears twice, while the other characters appear only once.

Step-by-step Explanation

1. Start by defining a function called
   that takes a single parameter,
   . This function will be used to convert the input string according to the given rules.
2. Inside the
   function, convert the
   to lowercase using the
   method. Save the result in a variable called
   . This is done to ignore capitalization differences.
3. Create an empty variable called
   to store the converted string.
4. Begin iterating through each character in the
   string. For each character, follow these steps:
   • Take the character at index
     using
     and store it in a variable called
     .
   • Count the number of occurrences of the
     in
     by splitting the string into an array using the
     method and then obtaining the length of the resulting array using the
     property. Subtract 1 from the length because the split method will create an array with one extra element.
   • If the count is greater than 1, it means the character is a duplicate. In this case, add ")" to the
     variable.
   • If the count is equal to 1, it means the character appears only once. In this case, add "(" to the
     variable.
5. After iterating through all the characters in
   , return the value of the
   variable as the converted string.
6. Finally, you can call the
   function by providing the input string that you want to convert and store the result in a variable for further use or print it to the console.