Strings.kt

package ru.fbear.strings

class Strings {
    fun shuflled(source: String, shuffled: String): Boolean {
        val sourceCharMap: MutableMap<Char, Int> = mutableMapOf()
        for (char in source) {
            if (!sourceCharMap.containsKey(char)) sourceCharMap[char] = 1
            else sourceCharMap[char] = sourceCharMap[char]!! + 1
        }

        val shuffledCharMap: MutableMap<Char, Int> = mutableMapOf()
        for (char in shuffled) {
            if (!shuffledCharMap.containsKey(char)) shuffledCharMap[char] = 1
            else shuffledCharMap[char] = shuffledCharMap[char]!! + 1
        }

        return sourceCharMap == shuffledCharMap
    }
}