[問題] C++ 開檔案就是慢? 還是處理程序問題?
開發平台(Platform): Visual Studio 2013 C++ Express
額外使用到的函數庫(Library Used): C++ STL
問題(Question):
開啟檔案速度過慢,別人的版本(JAVA只要10秒左右),我的要60秒
餵入的資料(Input):1M Transaction(一百萬筆交易)
Transaction Format為 I_1 I_2 .... I_N:value:U_1 U_2 ... U_N
U_k分別對應每個I_k, value是整個交易的U總和(已經計算好)
預期的正確結果(Expected Output):執行時間希望能縮短
程式碼(Code): http://pastebin.com/iLq0BN8Q
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