如何在Kotlin中创建带有泛型的映射？

val immutableMap: Map<String, Int> = mapOf(
    "one" to 1,
    "two" to 2,
    "three" to 3
)

val mutableMap: MutableMap<String, Int> = mutableMapOf(
    "one" to 1,
    "two" to 2,
    "three" to 3
)

// 添加一个新的键值对
mutableMap["four"] = 4

val hashMap: MutableMap<String, Int> = HashMap()
hashMap["one"] = 1
hashMap["two"] = 2
hashMap["three"] = 3

fun main() {
    // 创建一个不可变的映射
    val immutableMap: Map<String, Int> = mapOf(
        "one" to 1,
        "two" to 2,
        "three" to 3
    )

    println("Immutable Map: $immutableMap")

    // 创建一个可变的映射
    val mutableMap: MutableMap<String, Int> = mutableMapOf(
        "one" to 1,
        "two" to 2,
        "three" to 3
    )

    // 添加一个新的键值对
    mutableMap["four"] = 4
    println("Mutable Map after adding 'four': $mutableMap")

    // 使用HashMap创建一个可变的映射
    val hashMap: MutableMap<String, Int> = HashMap()
    hashMap["one"] = 1
    hashMap["two"] = 2
    hashMap["three"] = 3
    println("HashMap: $hashMap")
}

val map: MutableMap<String, Int> = mutableMapOf()
map["one"] = "1" // 错误：类型不匹配

val map: MutableMap<String, Int> = mutableMapOf()
map["one"] = 1 // 正确

val immutableMap: Map<String, Int> = mapOf("one" to 1)
immutableMap["two"] = 2 // 错误：不可变映射不能被修改

val mutableMap: MutableMap<String, Int> = mutableMapOf("one" to 1)
mutableMap["two"] = 2 // 正确