{       ArrayStack<Character> stack = new ArrayStack<Character>(100);
                int prev=0;
                int tek=0;
                int pom=0;
        for (int i=0;i<St.length;i++) {
                if (St[i]=='S' || St[i]=='T')
                        stack.push(St[i]);

        }
     while (stack.pop()!='S') {
         pom++;}


        while (!stack.isEmpty()) {

                if (stack.pop()=='T')
                        tek++;

                else {
                        if( pom == tek)
                    tek=0;
                else return 0;

                }

        }
        return 1;