重點
[Day 4 - 42 Exercise 1|Head or Tails] 擲硬幣(公定字)
[Day 4 - 44 Exercise 2|Banker Roulette] Banker輪盤,一串名字隨機抽,看誰結賬
[Day 4 - 46 Exercise 3|Treasure Map] 藏寶圖,輸入2位數字決定放寶藏的column & row
[Day 4 - Project|Rock Paper Scissors] 剪刀石頭布