Hard-Words

function hardWords(input) {
    let splitedText = input[0].split(" ");
    let keyWordsArr = input[1];
    let arr = [];

    for (let i = 0; i < keyWordsArr.length; i++) {
        let keyWord = keyWordsArr[i];
        for (let k = 0; k < splitedText.length; k++) {
            let wordFromText = splitedText[k];
            if (wordFromText[0] === "_" && wordFromText[wordFromText.length - 1] === "_") {
                if (keyWord.length === wordFromText.length) {
                    splitedText.splice(k, 1, keyWord);
                }
            } else if (wordFromText[0] === "_" && wordFromText[wordFromText.length - 1] !== "_") {
                if (keyWord.length === wordFromText.length - 1) {
                    let transformWordFromText = wordFromText.split("");
                    let finalSign = transformWordFromText.pop();
                    transformWordFromText.splice(0, transformWordFromText.length, ...keyWord);
                    transformWordFromText.push(finalSign);
                    transformWordFromText = transformWordFromText.join("");
                    splitedText.splice(k, 1, transformWordFromText);
                }
            }
        }
    }
    console.log(splitedText.join(" "))
}