Algorithms：Java中stdlib的利用

stdlib是java中的输入输出库, 网址: http://introcs.cs.princeton.edu/java/stdlib

CSDN下载地点: http://download.csdn.net/detail/u012515223/6639631

把stdlib.jar放入Eclipse的dropins文件夹内,加载stdlib.jar, 位置: 项目->Properties, 如图:

stdlib主要包括两组函数: In & Out, StdIn & StdOut

In & Out 是通过参数举办读取; StdIn & StdOut 是直接通过Console举办读取;

详细代码如下:

public class Stdlib  
{     
    public static void main(String args[])  
    {  
        //In&Out的用法  
        Out out = new Out(System.out);  
        out.println("Read a file of integers: ");  
        In in = new In(args[0]);  
        int arr[] = in.readAllInts();  
        for (int i : arr) { out.print(i + " "); }  
        out.println("end");  
              
        //StdIn&StdOut的用法  
        StdOut.println("Please input an array of integers (Ctrl+Z end): ");  
        while(!StdIn.isEmpty()) {  
            int val = StdIn.readInt();  
            StdOut.print(val + " ");  
        }  
        StdOut.println("end");  
    }  
}

输出:

Read a file of integers:   
1 2 3 4 5 6 7 8 9 10 end  
Please input an array of integers (Ctrl+Z end):   
11 12 13 14 15  
11 12 13 14 15 end