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Copy pathMain.java
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37 lines (35 loc) · 1.2 KB
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import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Random;
/**
* Main
*
* @author Macer
* @version V1.1
* @date 2018/05/05 16:09
*/
public class Main {
public static void main(String[] args) {
Integer[] a = new Integer[10000000];
Random rand = new Random(System.currentTimeMillis());
// 伪随机数填充数组
for (int i = 0; i < a.length; i++) {
a[i] = rand.nextInt(99999999);
}
// 复制多组相同的原始伪随机序列
Integer[][] aa = new Integer[10][a.length];
for (int i = 0; i < aa.length; i++) {
// System.arraycopy方法是native方法，比clone()更高效，Arrays.copyOf调用该方法
// 传入参数（源数组，源数组起始位置，目的数组，目的数组起始位置，复制长度）都是浅拷贝
System.arraycopy(a, 0, aa[i], 0, a.length);
}
try (
PrintWriter sortResult = new PrintWriter(new FileOutputStream("SortResult.txt"));
) {
SortDemo.print(sortResult, aa);
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
}