Java method to count the words with the most occurrences in English sentences and calculate the number of occurrences

This article describes the method of calculating the words with the most occurrences in English sentences and calculating the occurrences. Share it for your reference, as follows:

 import java.util.*;/** * Count the word with the most occurrences and the number of occurrences* * @author ZHR */public class CountWord { public static String[] strTostrArray(String str) { /* * Replace all non-letter characters with space characters " " Get a pure alphabetical string containing space characters */ str = str.toLowerCase();// Change all characters in the English part of the string to lowercase String regex = "[//W]+";// Non-letter regular expression-/W: represents any non-word character str = str.replaceAll(regex, " "); String[] strs = str.split(" "); // Use spaces as delimiters to obtain the string array return strs; } public static void countword(String[] strs) { /* * Create a mapping of the number of occurrences of strings (String) (Integer)*/ HashMap<String, Integer> strhash = new HashMap<String, Integer>(); Integer in = null;// The return value used to store the put operation for (String s : strs) {// traverse the array strs in = strhash.put(s, 1); if (in != null) {// 1. Integer value = e.getValue(); if (value > maxValue) { maxValue = value;// There is automatic unboxing maxStr = key; } } System.out.println("The word that appears the most is: " + maxStr + "appeared" + maxValue + "times"); } @SuppressWarnings("resource") public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.println("Please enter a line of English sentences: "); String str = scan.nextLine(); System.out.println("The English sentence entered is: " + str); String[] strs = strTostrArray(str); countword(strs); }}

Running results:

PS: Here are two very convenient statistical tools for your reference:

Online word count tool:
http://tools.VeVB.COM/code/zishutongji

Online character statistics and editing tools:
http://tools.VeVB.COM/code/char_tongji

For more information about Java algorithms, readers who are interested in this site can view the topics: "Java Data Structure and Algorithm Tutorial", "Summary of Java Operation DOM Node Tips", "Summary of Java File and Directory Operation Tips" and "Summary of Java Cache Operation Tips"

I hope this article will be helpful to everyone's Java programming.