1668. MaximumRepeatingSubstring

/**
 * 1668. Maximum Repeating Substring
 * 
 * For a string sequence, a string word is k-repeating if word concatenated k times is a substring of sequence. The word's maximum k-repeating value is the highest value k where word is k-repeating in sequence. If word is not a substring of sequence, word's maximum k-repeating value is 0.

 * Given strings sequence and word, return the maximum k-repeating value of word in sequence.


 * @param {string} sequence
 * @param {string} word
 * @return {number}
 */
 var maxRepeating = function(sequence, word) {
    let string = word
    let count = 0
    while(sequence.includes(string)){
        count++
        string += word
    }
    return count
};