Unit 4 Programming Assignment

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package firstsubroutines;

/**
 *
 * @author anonymous
 */


public class Firstsubroutines {
    
    
    // 1. Subroutine to find the reverse of a string
    public static String getReversed(String str){
            String reverse ="";
            int i;
            str = str.toLowerCase();
            
            for (i = str.length() - 1; i >= 0; i--) {
                if(str.charAt(i) >= 'a' && str.charAt(i) <= 'z'){
                    reverse = reverse + str.charAt(i);
                }
            }
            return reverse;
            
        }
    
    
    // 2. Subroutine to strip string of whitespace and non-letter characters
    public static String getStripped(String str){
            String stripped ="";
            str = str.toLowerCase();
            
            for (int i=0; i<= str.length() - 1; i++) {
                if(str.charAt(i) >= 'a' && str.charAt(i) <= 'z')
                   stripped = stripped + str.charAt(i);    
            }
            return stripped;
            
        }
    


    // 3. Checks for palindromes
    public static void main(String[] args) {
        
        String str="", getReversed = "", getStripped = "";
        TextIO.putln("Enter your phrase");
        str = TextIO.getln();
        
        String stripped = getStripped(str);
        String reversed = getReversed(str);
        
        TextIO.putln("stripped:" + getStripped(str));
        TextIO.putln("reversed:" + getReversed(str));
        
        if (stripped.equals(reversed))
            TextIO.putln("This IS a palindrome");
        else
            TextIO.putln("This is NOT a palindrome");     
    }
}