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  1. Prepare
  2. Algorithms
  3. Strings
  4. Funny String
  5. Discussions

Funny String

  • hharan987
     + 0 comments

    **Javascript two pointer solution, Simple and time complexity Big 0(n) **

    const englishAlphabet = "abcdefghijklmnopqrstuvwxyz"; 
    let leftIndex = 0;
    let rightIndex = originalStr.length - 1;
    while(leftIndex < rightIndex) {
        let leftDiff  = Math.abs(englishAlphabet.indexOf(originalStr[leftIndex])  - englishAlphabet.indexOf(originalStr[leftIndex + 1]));
        let rightDiff = Math.abs(englishAlphabet.indexOf(originalStr[rightIndex]) - englishAlphabet.indexOf(originalStr[rightIndex - 1]));
        if(leftDiff !== rightDiff) {
            return "Not Funny";
        }
        leftIndex++;
        rightIndex--;
    }
    return "Funny";