public class StringManipulation{





public static String reverse(String a){

        char[] b = new char[ a.length]; //Array in dem der umgedrehte Strin gespeichert wird


         int j = a.lenght;
        for (int i = 0;i < a.length;i++) {    //String umdrehen
            b[j - i] = a.charAt(i);

        }
      String c = new String(b);

        return c;  // Rückgabe

     }




public static String delete(String a, char b){

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

     if(a.charAt(i)==b){

     a.charAt(i)=' ';
     }
         return a;
     }


public static void delete(String a, int b, int c){

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

     if(i>b ||i<c){

     a.charAt(i)='';
     }
         return a;
     }
}


public static String insert(String a, int b, char c){

      char d;



        for (int i = b;i < a.length-b+1;i++) {

            char d=a.charAt(i);
            a.charAt(i)=c;
            c=d;
        }

        return a;

     }


public static String insert(String a, int b, String c){

      int lange = a.length+c.length;
      char[] b = new char[ a.length+c.length];


        for (int i = 0;i < lange;i++) {


            if(i>=b){
                for (i ;i < b.length;i++){
                   int j = 0;
                    char[i]=b.charAt(j);
                    j++;
                }
            }
           char[i]=a.charAt(i);
        }
        String a = new String(b);
        return a;


     }




public static String swapUpperLowerCase(String a){
     }



public static char[] toCharacterArray(String a){


      char[] b = new char[a.length];

        for (int i = 0;i < a.length;i++) {
            b[i] = a.charAt(i);

        }

        return b;

     }



}