Map<String,Integer> wordCount=newHashMap<>(); String[] wordArray=newString[]{"we","are","the","world","we"};for(String word: wordArray){//如果存在则加1,否则将值设置为1if(wordCount.containsKey(word)) { wordCount.put(word, wordCount.get(word) +1); }else{ wordCount.put(word,1); ...
publicvoidcountBefore8(){Map<String,Integer>wordCount=newHashMap<>();String[]wordArray=newString[]{"we","are","the","world","we"};for(String word:wordArray){//如果存在则加1,否则将值设置为1if(wordCount.containsKey(word)){wordCount.put(word,wordCount.get(word)+1);}else{wordCount.put(wo...
importjavautilHashMap; importjavautilMap; publicclassMapExample{ publicstaticvoidmain(String[]args){ Map<String,Integer>wordCount=newHashMap<>(); //添加键值对 wordCountput(apple,1); wordCountput(banana,2); wordCountput(cherry,3); //获取值 intcount=wordCountget:m.21youqie.cn;(banana); System...
";String[]words=text.split(" ");Map<String,Integer>wordCountMap=newHashMap<>();for(Stringword:words){word=word.toLowerCase();if(wordCountMap.containsKey(word)){intcount=wordCountMap.get(word);wordCountMap.put(word,count+1);}else{wordCountMap.put(word,1);}}wordCountMap.forEach((word,cou...
Stringsentence="I have a pen, I have an apple.";String[]words=sentence.split(" ");Map<String,Integer>wordCountMap=newHashMap<>();for(Stringword:words){wordCountMap.put(word,wordCountMap.getOrDefault(word,0)+1);}System.out.println(wordCountMap); ...
其实这个问题可以简化成实现 wordcount 功能。 一、Java案例,对数组字符实现 wordcount: String[] a = {"a","b","c","d","a","b","a","c","e"}; Map<String, Integer> map = new HashMap<String, Integer>(); for (int i = 0; i < arrays.length; i++) { ...
在Java中,可以使用HashMap类来创建一个Map对象。HashMap是一种基于哈希表的Map实现,它提供了快速的键值对查找、插入和删除操作。 java Map<String, Integer> wordCountMap = new HashMap<>(); 遍历需要计数的数据: 假设我们有一个字符串数组,其中包含了一些单词,我们希望统计每个单词出现的次数...
在Java中,可以使用HashMap类来创建字典,以下是一个简单的例子: import java.util.HashMap; import java.util.Map; public class Main { public static void main(String[] args) { // 创建一个HashMap对象 Map<String, Integer> wordCount = new HashMap<>(); ...
public static void main(String[] args) { Map<String, Integer> wordCounts = new HashMap<>();wordCounts.put("USA", 100);wordCounts.put("jobs", 200);wordCounts.put("software", 50);wordCounts.put("technology", 70);wordCounts.put("opportunity", 200);//按升序对值进⾏排序，使⽤...
public static void main(String[] args) { String text = "This is a sample text. This text contains sample words."; // 创建一个Map来存储单词和出现次数 Map<String, Integer> wordCountMap = new HashMap<>(); // 使用正则表达式分割文本并统计单词 String[] words = text.split("\\s+"); fo...