OOP第三阶段题目集总结|课程总结-22201608-柯汶君|今日要闻

import java.util.*;class InputData {    public static StringBuilder getData() {        StringBuilder stringBuilder = new StringBuilder();        String line;        while (!(line = Main.input.nextLine()).equals("exit")) {            //去掉单行注释和字符串里的内容            //.匹配这个字符多次，*字符后的内容            // /n 作为每行之间的特殊字符便于后续分割            stringBuilder.append(line.replaceAll("//.*", "").replaceAll("\".*\"", "")).append("\n");        }        return stringBuilder;    }}class DealData {    private Map countMap = new TreeMap<>(); // 键值对（关键词 出现次数）    private final Set keyWords = new HashSet<>(Arrays.asList(            "abstract", "assert", "boolean", "break", "byte", "case", "catch",            "char", "class", "const", "continue", "default", "do", "double", "else", "enum",            "extends", "for", "final", "finally", "float", "goto", "if", "implements", "import",            "instanceof", "int", "interface", "long", "native", "new", "package", "private",            "protected", "public", "return", "short", "static", "strictfp", "super", "switch",            "synchronized", "this", "throw", "throws", "transient", "try", "void", "volatile",            "while", "true", "false", "null"));    public Map getCountMap() {        return countMap;    }    public String[] remove(StringBuilder stringBuilder) {        //去掉多行注释        int startIndex = stringBuilder.indexOf("/*");        while (startIndex != -1) {            int endIndex = stringBuilder.indexOf("*/", startIndex + 2);            if (endIndex == -1) {                break;            }            stringBuilder.replace(startIndex, endIndex + 1, "");            startIndex = stringBuilder.indexOf("/*");        }        stringBuilder.toString().replaceAll(",", " ");        String str = stringBuilder.toString();        /*运算符加上关键词应该不算关键词        所以要把带运算符的关键词作为非处理        */        //通过改变运算符使整体不再是关键词        str = str.replace("-", "k").replace("*", "w").replace("/", "j");        str = str.replace("+", "h").replace(">", "y").replace("=", "y");        str = str.replace("!", "s");        str = str.replace(":", "s");        //匹配非字母项为空格，再用多空格分割每一块代码        String[] strings = str.replaceAll("[^a-zA-Z]", " ").split("\\s+");        return strings;    }    public void count(String[] codes) {        for (String keyword : keyWords) { // map初始化            countMap.put(keyword, 0);        }        //把每个代码词块都单独拿出来，再与关键词一一匹配        for (String code : codes) {            for (String keyword : keyWords) {                if (code.equals(keyword)) {                    countMap.put(keyword, countMap.get(keyword) + 1);                }            }        }    }}public class Main {    public static Scanner input = new Scanner(System.in);    public static void main(String[] args) {        DealData dealData = new DealData();        StringBuilder data = InputData.getData();        //进行结果的输出        if(data.length() == 0) {            System.out.println("Wrong Format");        } else {            String[] codes = dealData.remove(data);            dealData.count(codes);            for (Map.Entry entry : dealData.getCountMap().entrySet()) {                if(entry.getValue() > 0) {                    System.out.println(entry.getValue()+ "\t" +entry.getKey());                }            }        }    }}