分别实现了
- 统计文件中每个单词出现的次数
- 统计文件中每一个字符出现的次数
- 统计文件中字母和非字母出现的次数
- 文件中有大量相同或不同的IP地址,进行IP去重,相同的IP仅输出一个。
- 文件中有大量人名与对应分数,同一个人可能考出的不同分数,找出每一个人(假定没有重名)的最高分。
- 文件中有大量人名与对应分数,同一个人可能考出的不同分数,找出每一个人(假定没有重名)的总分。
学习大数据MapReduce编程的产物
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