JavaAlgorithms/Others/CountChar.java
yanglbme 29948363da docs: update the whole repository
* fix some bugs
* delete duplicate files
* format code
2019-05-09 19:32:54 +08:00

45 lines
966 B
Java

package Others;
import java.util.Scanner;
/**
* @author Kyler Smith, 2017
* <p>
* 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();
input.close();
System.out.println("There are " + CountCharacters(str) + " characters.");
}
/**
* @param str: String to count the characters
* @return int: Number of characters in the passed string
*/
private static int CountCharacters(String str) {
int count = 0;
if (str == "" || str == null) {
return 0;
}
for (int i = 0; i < str.length(); i++) {
if (!Character.isWhitespace(str.charAt(i))) {
count++;
}
}
return count;
}
}