12915.kt

class Solution {

    fun solution(strings: Array<String>, n: Int): Array<String> {

        var i = strings.size - 1
        while (i > 0) {
            var j = 0
            while (j < i) {
                var temp: String
                if (strings[j][n] > strings[j + 1][n]) {
                    temp = strings[j]
                    strings[j] = strings[j + 1]
                    strings[j + 1] = temp
                }

                if (strings[j][n] == strings[j + 1][n] && strings[j] > strings[j + 1]){
                    temp = strings[j]
                    strings[j] = strings[j + 1]
                    strings[j + 1] = temp
                }

                j++
            }
            i--
        }

        return strings
    }

}