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Is Case-Insensitive Palindrome?

Description

Given a string, check if it can become a palindrome (a palindrome is a string that reads the same left-to-right and right-to-left) through a case change of some (possibly, none) letters.

Example

  • For inputString = "AaBaa", the output should be isCaseInsensitivePalindrome(inputString) = true.

"aabaa" is a palindrome as well as "AABAA", "aaBaa", etc.

  • For inputString = "abac", the output should be isCaseInsensitivePalindrome(inputString) = false.

All the strings which can be obtained via changing case of some group of letters, i.e. "abac", "Abac", "aBAc" and 13 more, are not palindromes.

Input/Output

  • [execution time limit] 4 seconds (js)

  • [input] string inputString

    Non-empty string consisting of English letters.

    Guaranteed constraints:
    4 ≤ inputString.length ≤ 10.

  • [output] boolean

[JavaScript (ES6)] Syntax Tips

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// Prints help message to the console
// Returns a string
function helloWorld(name) {
console.log("This prints to the console when you Run Tests");
return "Hello, " + name;
}

Solution

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function isCaseInsensitivePalindrome(inputString) {
  return (
    inputString.toLowerCase() ===
    inputString
      .toLowerCase()
      .split("")
      .reverse()
      .join("")
  );
}