import java.util.Scanner; import java.util.Stack; public class a { public static String remove(String str) { str = str.replaceAll("[^a-zA-Z0-9]", ""); return str; } public static void main(String args[]) { Scanner sc = new Scanner(System.in); System.out.print("Enter a String: "); String str = sc.nextLine(); System.out.println(remove(str)); Stack<Character> vowel = new Stack<>(); Stack<Character> consonant = new Stack<>(); for(int i = 0; i < str.length(); i++) if (str.charAt(i) == 'a' || str.charAt(i) == 'e' || str.charAt(i) == 'i' || str.charAt(i) == 'o' || str.charAt(i) == 'u') { vowel.push(str.charAt(i)); } else { consonant.push(str.charAt(i)); } System.out.print("vowels: " + vowel); System.out.print("\n" + "consonant: " + consonant); } }
str = remove(str); System.out.println(str);
var
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