hadoop自定義排序，分組排序

在一堆數據中，名字後表示各科成績 1303,3012,肖芷青,118,78,136,55,64,58,81,83,48 1303,3013,曹嫺瑤,117,106,130,46,94,70,75,77,56 1303,3014,黃嘉煒,104,128,105,56,92,89,65,84,72 1303,3015,張旭,103,124,129,67,88,81,78,71,78 1303,3016

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