[Java] Infix/Post to Prefix 的String method

上來求助...
寫緊個Java
要求轉換expression

搵極都搵唔到有
  1. public static String toPrefix(String fix){
  2. ...
  3. return fix
  4. }
複製代碼
虛心求...Thx

current code
left
right

pls ask google instead~~

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