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

Funny String

  • benjamin_s1_e
     + 0 comments

    2 javascript solutions.

    Tracking double indexes, not too pleasant to read:

        for (let i = 0, j = s.length-1; i < s.length-1; i++, j--) {
        const [code, codeNext] = [s.charCodeAt(i), s.charCodeAt(i+1)];
        const [reverseCode, reverseCodeNext] = [s.charCodeAt(j), s.charCodeAt(j-1)];

        if (Math.abs(code- codeNext) !== Math.abs(reverseCode - reverseCodeNext)){
            return "Not Funny";
        }
    }

    return "Funny";

    An easier to read solution

    function getDiff (str: string): number[] {
    return Array(str.length-1).fill(0).map((_, i) => {
        const code = str.charCodeAt(i);
        const codeNext = str.charCodeAt(i+1);
        return Math.abs(code - codeNext);
    })
}

function funnyString(s: string): string {
    // Write your code here

    const diff = getDiff(s);
    const reverseDiff = getDiff(s.split("").reverse().join(""));
    
    if (diff.some((el, i)=> el !== reverseDiff[i])) {
        return "Not Funny";
    }
    return "Funny";
}