删除重复的内容Java
我收到了这段文字，我需要过滤掉这些重复的行和单词。我不知道是否有比我正在做的更好的方法。
00:00:00,413|03:50:25,600|ISDB|>> FALAM QUE A GENTE COMBINA
00:00:00,413|03:50:25,600|ISDB|PERFEITAMENTE. EU
00:00:01,135|00:00:01,315|ISDB|>> FALAM QUE A GENTE COMBINA
00:00:01,135|00:00:01,315|ISDB|PERFEITAMENTE. EU PEDI REVISTAS
00:00:01,315|00:00:02,218|ISDB|PERFEITAMENTE. EU PEDI REVISTAS
00:00:01,315|00:00:02,218|ISDB|BOBAS PARA
00:00:02,218|00:00:02,398|ISDB|PERFEITAMENTE. EU PEDI REVISTAS
00:00:02,218|00:00:02,398|ISDB|BOBAS PARA AMIGOS
00:00:02,398|00:00:02,759|ISDB|PERFEITAMENTE. EU PEDI REVISTAS
00:00:02,398|00:00:02,759|ISDB|BOBAS PARA AMIGOS E AO
00:00:02,759|00:00:03,274|ISDB|PERFEITAMENTE. EU PEDI REVISTAS
00:00:02,759|00:00:03,274|ISDB|BOBAS PARA AMIGOS E AO INV?
00:00:03,274|00:00:04,357|ISDB|BOBAS PARA AMIGOS E AO INV?
00:00:03,274|00:00:04,357|ISDB|DISSO TROUXERAM ISSO A?
00:00:04,357|00:00:05,259|ISDB|BOBAS PARA AMIGOS E AO INV?
00:00:04,357|00:00:05,259|ISDB|DISSO TROUXERAM ISSO A? ELES
00:00:05,259|00:00:05,414|ISDB|DISSO TROUXERAM ISSO A? ELES
00:00:05,414|00:00:05,775|ISDB|DISSO TROUXERAM ISSO A? ELES
00:00:05,414|00:00:05,775|ISDB|COLOCARAM AS FOTOS
00:00:05,775|00:00:06,677|ISDB|DISSO TROUXERAM ISSO A? ELES
00:00:05,775|00:00:06,677|ISDB|COLOCARAM AS FOTOS COMO
00:00:06,677|00:00:06,858|ISDB|DISSO TROUXERAM ISSO A? ELES
00:00:06,677|00:00:06,858|ISDB|COLOCARAM AS FOTOS COMO PAPEL
00:00:06,858|03:50:32,400|ISDB|COLOCARAM AS FOTOS COMO PAPEL DE
00:00:06,858|03:50:32,400|ISDB|PAREDE, PARECE AT?QUE
00:00:07,914|00:00:07,916|ISDB|COLOCARAM AS FOTOS COMO PAPEL DE
00:00:07,914|00:00:07,916|ISDB|PAREDE, PARECE AT?QUE EU
00:00:07,914|00:00:08,997|ISDB|PAREDE, PARECE AT?QUE EU GOSTO
00:00:08,997|00:00:09,178|ISDB|PAREDE, PARECE AT?QUE EU GOSTO
而且我正在使用该代码，将这些行放入HashSet中，以免重复。
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;
public class Testecc {
public static void main(String args[]) throws Exception {
String filePath = "C://teste//teste1.txt";
String input = null;
//Buffered reader
BufferedReader br = new BufferedReader(new FileReader(filePath));
while((input=br.readLine()) !=null){
input=br.readLine();
//FileWriter (criando arquivo)
FileWriter writer = new FileWriter("C://teste//teste.txt");
//hashset para elimitar duplicatas
Set set = new HashSet();
String line;
//adicionando linhas no hashset
while((line=br.readLine())!=null){
String line1= line.substring(0,31);
String line2=line.substring(31);
System.out.println(line);
if(set.add(line2)){
writer.append(line1+line2+"\n");
}
}
writer.flush();
System.out.println("Pronto!");
}
}
}
这样，我删除了重复的行，如下所示：
00:00:01,135|00:00:01,315|ISDB|>> FALAM QUE A GENTE COMBINA
00:00:01,135|00:00:01,315|ISDB|PERFEITAMENTE. EU PEDI REVISTAS
00:00:01,315|00:00:02,218|ISDB|BOBAS PARA
00:00:02,218|00:00:02,398|ISDB|BOBAS PARA AMIGOS
00:00:02,398|00:00:02,759|ISDB|BOBAS PARA AMIGOS E AO
00:00:02,759|00:00:03,274|ISDB|BOBAS PARA AMIGOS E AO INV�S
00:00:03,274|00:00:04,357|ISDB|DISSO TROUXERAM ISSO A�.
00:00:04,357|00:00:05,259|ISDB|DISSO TROUXERAM ISSO A�. ELES
00:00:05,414|00:00:05,775|ISDB|COLOCARAM AS FOTOS
00:00:05,775|00:00:06,677|ISDB|COLOCARAM AS FOTOS COMO
00:00:06,677|00:00:06,858|ISDB|COLOCARAM AS FOTOS COMO PAPEL
00:00:06,858|03:50:32,400|ISDB|COLOCARAM AS FOTOS COMO PAPEL DE
00:00:06,858|03:50:32,400|ISDB|PAREDE, PARECE AT� QUE
00:00:07,914|00:00:07,916|ISDB|PAREDE, PARECE AT� QUE EU
00:00:07,914|00:00:08,997|ISDB|PAREDE, PARECE AT� QUE EU GOSTO
但是我还需要删除重复的单词。
我真的没有主意。
我怎样才能做到这一点？
问题来源：Stack Overflow
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-
重复的词行为单位还是全局，如果是行，那么就针对行再过滤一遍。 如果是全渠建议用一下倒排，标记出每个次出现的位置，后续统一处理。
2020-03-25 09:59:08赞同 展开评论 打赏 -
有一个地图，其中包含按特定键分组的线值。键是一行的开头，从您感兴趣的单词开始，例如前5个字母。然后将这些线添加到地图中，如果该线长于先前找到的线，则将其替换。
try (BufferedReader br = new BufferedReader(new FileReader(filepath))) { final Map<String, String> map = new LinkedHashMap<>(); br.lines().forEach(line -> { String message = line.substring(line.lastIndexOf("|") + 1); if (message.isEmpty()) { return; } String key = message.split(" ")[0]; if (map.get(key) == null) { map.put(key, line); } else if (map.get(key).length() < line.length()) { map.remove(key); map.put(key, line); } } ); map.forEach((k, v) -> System.out.println(v)); }上面的代码将为您提供以下输出。
00:00:00,413|03:50:25,600|ISDB|>> FALAM QUE A GENTE COMBINA 00:00:01,135|00:00:01,315|ISDB|PERFEITAMENTE. EU PEDI REVISTAS 00:00:02,759|00:00:03,274|ISDB|BOBAS PARA AMIGOS E AO INV? 00:00:04,357|00:00:05,259|ISDB|DISSO TROUXERAM ISSO A? ELES 00:00:06,858|03:50:32,400|ISDB|COLOCARAM AS FOTOS COMO PAPEL DE 00:00:07,914|00:00:08,997|ISDB|PAREDE, PARECE AT?QUE EU GOSTO回答来源：Stack Overflow
2020-03-24 15:11:56赞同 展开评论 打赏
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