如何在Java中将句子拆分为单词，然后将其分为两组？

Question

I need to split sentence in to words and then in to two groups. One group should contain only last word in the sentence and other words belongs to second group as modifiers of the sentence.
Eg: Max Price Food Information {Max, Price, Food} {Information}

I did it until splitting the words. But cound't group like that.How can I do it?

import java.util.*;
public class Groupword {
    public static void main(String[] args) {

    ArrayList<String> words = new ArrayList<String>();
    HashMap<String, Integer> wordFreqMap = new HashMap<String, Integer>();

    terms.add("Max Price Food Information");

    for(int i=0; i < terms.size(); i++) {
      tempTerm = terms.get(i);
      String[] result = tempTerm.split(" ");
      for (String s : result) {
      System.out.println("word="+s);
    ...................................
    ...................................
    }
}

Answer 1

    String lastWord = result[result.length - 1];
    String[] modifiers = Arrays.copyOf(result, result.length - 1);

Answer 2

Use Arrays.copyOfRange :

terms.add("Max Price Food Information");


for (String s: terms) {
    String[] arr = s.split(" ");
    String[] arr1 = Arrays.copyOfRange(arr, 0, arr.length-1);  // [Max, Price, Food]
    String[] arr2 = Arrays.copyOfRange(arr, arr.length-1, arr.length); // [Information]
}

Answer 3

i think this solution might work , it's not efficient if you have this pattern : Max Price Food Information you could have two array :

String Data[][]=new String[3][terms.size];
String Information[] = new String[terms.size];

then reading data in following way :

Scanner in = new Scanner(System.in);
for(int i=0; i < terms.size(); i++){
    Data[0][i] = in.next();
    Data[1][i] = in.next();
    Data[2][i] = in.next();
    Information[i] = in.next();
}

this way is without split method

Answer 4

You can simply store the last word from the split words array and truncate the array's last element by copying it until length-1.

Something like this:

for(int i=0; i < terms.size(); i++) {
  tempTerm = terms.get(i);
  String[] result = tempTerm.split(" ");
  for (String s : result) {
      System.out.println("word="+s);
  }
  String lastWord = result[result.length-1];
  result = Arrays.copyOf(result, result.length-1)
}

Answer 5

List<String> firstWordsList = new ArrayList<>();
List<String> lastWordList = new ArrayList<>();
for(String tempTerm : terms) {
    int lastSpaceIndex = tempTerm.lastIndexOf(" ");
    if (lastSpaceIndex >= 0) {
        String firstWords = tempTerm.substring(0, lastSpaceIndex);
        String lastWord = tempTerm.substring(lastSpaceIndex+1);
        firstWordsList.add(firstWords);
        lastWordsList.add(lastWord);
    }
    else {
        lastWordsList.add(tempTerm);
    }
}