Kotlin Trie Insert Basic

trieBasicInsert.kt

fun insert(key: String, value: Value) {
    var currentNode = root
    
    for (char in key) {
        if (currentNode.children[char] == null) {
            currentNode.children[char] = Node()
        }
        currentNode = currentNode.children[char]!!
    }
    
    currentNode.value = value
}