2053-kth-distinct-string-in-an-array

DevGod

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js

/**
 * @param {string[]} arr
 * @param {number} k
 * @return {string}
 */
var kthDistinct = function(arr, k) {
    let myMap = _.countBy(arr);
    let keys = Object.keys(myMap).filter( (key) => myMap[key] === 1)
    return keys[k-1] !== undefined ? keys[k-1] : "";
};

py

class Solution:
    def kthDistinct(self, arr: List[str], k: int) -> str:
        myMap = Counter(arr)
        arr = [key for key, value in myMap.items() if value <= 1]
        return "" if len(arr)-k < 0 else arr[k-1]