[Algorithm] 1 week(1.10 ~ 16) 1/3

LeetCode. No. 2000. Reverse Prefix of Word

var reversePrefix = function(word, ch) {
    const splitWord = word.split('');
    const findIndex = splitWord.findIndex((item) => item === ch);
    
    const reverseWord = splitWord.slice(0, findIndex + 1).reverse();
    const reverseSplitWord = splitWord.slice(findIndex + 1);
    
    return [...reverseWord, ...reverseSplitWord].join('')
};