# Git 學習
* https://learngitbranching.js.org/

# Kotlin

* Tools -> Kotlin -> Kotlin REPL
* REPL (Read-Eval-Print-Look)
* 如果遇到問題可以改這裡：
* `Run -> Edit Configurations... -> Edit configuration templates... -> Java Scratch -> Shorten command line: -> @argfile`

* [Kotlin Playground](https://play.kotlinlang.org/)

* 語法參考
* https://kotlinlang.org/docs/basic-syntax.html#variables

## 剪刀石頭布遊戲 Playground 版本基本程式

fun main() {
    // 玩家出拳
    val playerChoice = "布"

    // 電腦出拳
    val computerChoice = when ((0..2).random()) {
        0 -> "剪刀"
        1 -> "石頭"
        else -> "布"
    }

    // 判斷勝負
    val result = when (playerChoice) {
        "剪刀" -> {
            when (computerChoice) {
                "剪刀" -> "平手"
                "石頭" -> "你輸了"
                else -> "你贏了"
            }
        }
        "石頭" -> {
            when (computerChoice) {
                "剪刀" -> "你贏了"
                "石頭" -> "平手"
                else -> "你輸了"
            }
        }
        else -> {
            when (computerChoice) {
                "剪刀" -> "你輸了"
                "石頭" -> "你贏了"
                else -> "平手"
            }
        }
    }

    // 輸出結果
    println("玩家出拳：$playerChoice")
    println("電腦出拳：$computerChoice")
    println("結果：$result")
}