How to count letters, digits, spaces in a string - string

Question

I'm working on a code to count the amount of spaces/digits/letters inside a given input using a loop. I am trying to use the .isdigit() and .isalpha() method to see if each letter in the string is a letter or number, and if true, adding it to the count. My code looks perfect to me, but when I run it, I only get the count for length and spaces (Which is not using the .isspace() method)
Perhaps I am messing up when updating the count within my loop but again.. it all looks good to me, could anyone help steer me in the right direction?
def main():
sentence = input('Enter a sentence: ')
printStats(sentence)
def printStats(input):
print('Statistics on your sentence: ')
print(' Characters:', charCount(input))
print(' Letters:', letterCount(input))
print(' Digits:', digitCount(input))
print(' Spaces:', spaceCount(input))
def charCount(input):
for char in input:
return len(input)
#Section below is where I need help
def letterCount(input):
count=0
for letter in input:
if input.isalpha():
count += 1
return count
def digitCount(input):
count=0
for digit in input:
if input.isdigit():
count += 1
return count
#Section above is where I need help
def spaceCount(input):
for space in input:
return input.count(" ")
main()
Thanks for your time

Answer 1

package com.drools;
public class TEST {
public static void main(String[] args) {
int charCount = 0;
int digitCount = 0;
String word = "NEW YORK 1";
String data[];
int k = 0;
data = word.split("");
int data1 = word.length();
char temp;
for (int i1 = 0; i1 < word.length(); i1++) {
temp = word.charAt(i1);
if (Character.isLetter(temp)) {
charCount++;
} else if (Character.isDigit(temp)) {
digitCount++;
for (int i = 0; i < data.length; i++) {
if (data[i].equals(" ")) {
k++;
}
}
System.out.println("total count "+ data1 + "||number of spaces in the entire word "+ k + " ||characters " + charCount+ " || digits" + digitCount);
}
}}
}
**Out put:**
total count 10||number of spaces in the entire word 2 ||characters 7 || digits1

Answer 2

You need to do letter.isalpha() and digit.isdigit() instead of calling them on the entire input.

Answer 3

import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class LettersDigitsSpace {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
Pattern pletter = Pattern.compile("[a-zA-Z]");
Pattern pdigit = Pattern.compile("\\d");
Pattern pwhitespace = Pattern.compile("\\s");
System.out.println();
System.out.println("-------------------------------------------------");
System.out.println("--- Letters, Digits, and White Spaces counter ---");
System.out.println("-------------------------------------------------");
System.out.println();
System.out.println("Enter String: ");
String val = input.nextLine();
Matcher mletter = pletter.matcher(val);
Matcher mdigit = pdigit.matcher(val);
Matcher mspace = pwhitespace.matcher(val);
int countl = 0, countd = 0, counts = 0;
while (mletter.find()) {
countl++;
}
while (mdigit.find()) {
countd++;
}
while (mspace.find()) {
counts++;
}
System.out.println("\nLetter count: "+countl+"\nDigit count: " + countd + "\nWhite Space count: " + counts);
}
}