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algorithms's Introduction

算法（第四版）

书本自带的版本库在 std.lib 下，这是解压的 stdlib.jar 源码，你也可以直接将 lib/stdlib.jar 加入到 library 中去。 数据集下载：http://algs4.cs.princeton.edu/code/algs4-data.zip

重定向与管道

如果想要运行书中的命令，那么进入 lib 目录中，然后

java -Djava.ext.dirs=. RandomSeq 1000 100.0 200.0 > data.txt

这样就会在当前lib下生成一个包含 100 到 200 之间的随机数文件。

求平均数：

java -Djava.ext.dirs=. Average < data.txt
--------结果分割线
Average is 150.27822999999998

管道：

java -Djava.ext.dirs=. RandomSeq 1000 100.0 200.0 | java -Djava.ext.dirs=. Average
--------结果分割线
Average is 149.16858000000005

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