count the number of words in a string java
public static void main(String[] args)
{
//return the number of words in a string
String example = "This is a good exercise";
int length = example.split(" ").length;
System.out.println("The string is " + length + " words long.");
}how to count number of words in a string
String name = "Carmen is a fantastic play"; //arbitrary sentence
int numWords = (name.split("\\s+")).length; //split string based on whitespace
//split returns array - find legth of array
System.out.println(numWords);how to count words in string in java
String str = "I am happy and why not
and why are you not happy and you should be";
String [] arr = str.split(" ");
Map<String, Integer> map = new HashMap<>();
for (int i=0 ; i < arr.length ; i++){
if (!map.containsKey(arr[i])){
map.put(arr[i],1);
} else{
map.put(arr[i],map.get(arr[i])+1);
}
}
for(Map.Entry<String, Integer> each : map.entrySet()){
System.out.println(each.getKey()+" occures " + each.getValue() + " times");
}count word in string no matter the delimiter java
public static void main(String[] args)
{
//Scanner object instantiation
Scanner dude = new Scanner(System.in);
//variable declaration
String string1 = "";
int count = 0;
boolean isWord = false;
//user prompt and input
System.out.println("Enter in your string");
string1 = dude.nextLine();
int endOfLine = string1.length()-1;
char ch [] = string1.toCharArray();
for (int i = 0; i < string1.length(); i++)
{
if(Character.isLetter(ch[i]) && i != endOfLine)
{//if character is letter and not end of line
isWord = true; //it is part of a word
}
if (!Character.isLetter(ch[i]) && isWord)
{ //if character is not a letter, and previous
//character is a letter i.e. non-letter is
//preceded by character
count++; //add to word count
isWord = false; //get ready to detect new word
}
if (Character.isLetter(ch[i]) && i == endOfLine)
{ //if character is letter
//and at end of line
count++; //add to word count
isWord = false;
}
}
System.out.println("There are " +count+ " words");
}Copyright © 2021 Codeinu
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