2023/2/27号周一总结

今天上午没课，在宿舍呆了一上午，写作业和练习编代码。下午是建民老师的课，老师讲了一些关于软件工程的知识和让我们做了一个将文章里单词首尾字母相连最长的单词链这样一个课堂测试，并不难但是如果要过老师的一些特殊情况的测试还是比较麻烦的，晚上完善了一下写的程序。

import java.awt.geom.Area;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.OutputStream;

public class dancilian {

public static void main(String[] args) {
// TODO Auto-generated method stub
//String[] A={"apple","zoo","elephant","under","fox","dog","moon","leaf","tree"};
dancilian a=new dancilian();
File file = new File("F:/input1.txt");
String b=a.read(file);
String[] A =b.split(" ");

String[] f;
String[] l;
String[] end;
f=a.first(A);
l=a.last(A);
end=a.jielong(A, l, f);

for(int i=0;i<3;i++)
System.out.println(end[i]);
try {
a.write(end);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public String[] first(String[] A)
{
String[] F= new String[A.length];
for(int i=0;i<A.length;i++)
{
F[i]=A[i].substring(0,1);
}
return F;

}

public String[] last(String[] A)
{
String[] L= new String[A.length];
for(int i=0;i<A.length;i++)
{
L[i]=A[i].substring(A[i].length()-1);
}
return L;

}
public String[] jielong(String[] A,String[] L,String[] F)//获取接龙字母
{
String[] end=new String[A.length];
int k=0;
end[0]=A[0];
for(int j=0;j<A.length;j++)
{

if((end[k].substring(end[k].length()-1)).equals(F[j]))
{
//System.out.println(end[k].substring(end[k].length()-1));
end[++k]=A[j];

}
}

return end;

}
public String read(File file){
StringBuilder result = new StringBuilder();
try{
BufferedReader br = new BufferedReader(new FileReader(file));
String s = null;
while((s = br.readLine())!=null){
result.append(System.lineSeparator()+s);
}
br.close();
}catch(Exception e){
e.printStackTrace();
}
return result.toString();
}
public void write(String[] str) throws Exception{
File f = new File("F:/output1.txt");
OutputStream out = new FileOutputStream(f,true);
//String[] str = {"shanghai","beijing","guangdong","xiamen"};
for(int i=0; i<str.length; i++){
out.write(str[i].getBytes()); 
out.write('\r'); //
out.write('\n');
}
out.close(); 
System.out.println("写入成功！");
}
}