Java - Get word frequency in a sentence

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Description

Get word frequency in a sentence

Demo

import java.text.DecimalFormat;
import java.util.LinkedHashMap;
import java.util.Map;


public class Main {
    public static void main(String[] args) {
        String[] cards = "a b d e".split("\\W+");
        Map<String,Integer> frequences = new LinkedHashMap<>();
        for (String card : cards) {
            if(frequences.containsKey(card)){
                frequences.put(card,frequences.get(card) + 1);
            } else {
                frequences.put(card,1);//from  w w  w .jav  a 2s. c om
            }
        }
        DecimalFormat formatter = new DecimalFormat("#0.00");
        for (Map.Entry<String,Integer> face : frequences.entrySet()) {
            System.out.println(face.getKey() + " -> " + formatter.format((double)face.getValue() * 100 / cards.length) + "%");
        }

    }
}

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