JavaAlgorithms/Others/CountChar.java

44 lines
896 B
Java

import java.util.Scanner;
/**
* @author Kyler Smith, 2017
*
* Implementation of a character count.
* (Slow, could be improved upon, effectively O(n).
* */
public class CountChar {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter your text: ");
String str = input.nextLine();
System.out.println("There are " + CountCharacters(str) + " characters.");
}
/**
* @param str: String to count the characters
*
* @return int: Number of characters in the passed string
* */
public static int CountCharacters(String str) {
int count = 0;
if(str == "" || str == null) //Exceptions
{
return 0;
}
for(int i = 0; i < str.length(); i++) {
if(!Character.isWhitespace(str.charAt(i))) {
count++;
}}
return count;
}
}