String_Builder/Task3.java at main · LaibahAzhar/String_Builder · GitHub

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/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package stringbuilder.StringBuilder;

/**
 *
 * @author hp
 */
public class Task3 {

    /*
    method to remove extra spaces
    @param string tyoe s entered by user
    @return string without extra spaces
    */
     String ridMultipleBlank(String s)
    {
       return s.replaceAll("\\s+"," ").trim();
    }


    /*
    method to remove integer from a string
    @param String type s entered from the user
    @return String type result without any integer
    */
    String removeInteger(String s)
    {
       //Converting string to charArray
        char[] charArray = s.toCharArray();
        String result = "";

        for (int i = 0; i < charArray.length; i++) {

            //if the character is not a digit it is added to the string
            if (!Character.isDigit(charArray[i])) {
                result = result + charArray[i];
            }
        }
        return result;
    }

    String stringEncryption(String s){
        String encrypted ="";
        char[] chars = s.toCharArray();

        for(char c : chars)
        {
            if(c==' '){
                c='*';
                encrypted = encrypted + c ;
            }else{
                c++;
                encrypted = encrypted + c;
            }
        }
        return encrypted;
    }

//    Decryption
//    String stringDecryption(String s){
//        String decrypted ="";
//        char[] chars = s.toCharArray();
//
//        for(char c : chars)
//        {
//            if(c=='*'){
//                c=' ';
//                decrypted = decrypted + c ;
//            }else{
//                c--;
//                decrypted = decrypted + c;
//            }
//        }
//        return decrypted;
//    }

}