質問編集履歴
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タイトルをかえました
test
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test
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@@ -15,163 +15,3 @@
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「\s+」1つ以上のスペースの正規表現というのは検索できたのですが、
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これ全体で何を指しているのかわかりません…（わかり次第追記はしていくつもりです）
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### 該当のソースコード
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```java
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package practice.test20160812;
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import java.io.BufferedReader;
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import java.io.FileNotFoundException;
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import java.io.FileReader;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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public class Accumulate {
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private static final String FILE_PATH = "resource\RAMBLES_IN_FLORIDA_PART_1.txt";
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private static final String SEPARATOR = "(\s+?|\.|,|;)";
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public static void main(String[] args) {
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// 集計
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Map<String, Integer> map = new HashMap<>();
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try (FileReader fr = new FileReader(FILE_PATH);
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BufferedReader br = new BufferedReader(fr)){
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String line;
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while ((line = br.readLine()) != null) {
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String[] words = line.split(SEPARATOR);
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for (String word : words) {
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if (!word.isEmpty()) {
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if (map.containsKey(word)) {
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int count = map.get(word) + 1;
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map.put(word, count);
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} else {
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map.put(word, 1);
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}
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}
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}
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}
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} catch (FileNotFoundException e) {
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System.out.println("ファイルが見つかりませんでした。");
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} catch (IOException e) {
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System.out.println("読み取りに失敗しました。");
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}
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// 出現数で降順に並べ替え、つづりの長さ最大値取得
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List<String> list = new ArrayList<>();
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int maxLengthOfSpelling = 0;
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for (String key : map.keySet()) {
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list.add(key);
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if (maxLengthOfSpelling < key.length()) {
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maxLengthOfSpelling = key.length();
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}
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}
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Collections.sort(list, (o1, o2) -> {
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return - map.get(o1) + map.get(o2);
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});
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// 上位10件出力
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System.out.println("出現回数トップ10");
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String format = "%-" + maxLengthOfSpelling + "s: %3d";
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for (String word : list) {
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int count = map.get(word);
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if (10 <= count) {
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System.out.printf(format, word, count);
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System.out.println();
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}
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}
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}
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}
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```
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