static int runTestCase(int casenum__) {
		switch (casenum__) {
		case 0: {
			String s = "ab";
			int expected__ = 2;

			return verifyCase(casenum__, expected__, new TheLuckyString().count(s));
		}
		case 1: {
			String s = "aaab";
			int expected__ = 0;

			return verifyCase(casenum__, expected__, new TheLuckyString().count(s));
		}
		case 2: {
			String s = "aabbbaa";
			int expected__ = 1;

			return verifyCase(casenum__, expected__, new TheLuckyString().count(s));
		}
		case 3: {
			String s = "abcdefghij";
			int expected__ = 3628800;

			return verifyCase(casenum__, expected__, new TheLuckyString().count(s));
		}

		// custom cases

		/*
		 * case 4: {
		 * String s = ;
		 * int expected__ = ;
		 *
		 * return verifyCase(casenum__, expected__, new
		 * TheLuckyString().count(s));
		 * }
		 */
		/*
		 * case 5: {
		 * String s = ;
		 * int expected__ = ;
		 *
		 * return verifyCase(casenum__, expected__, new
		 * TheLuckyString().count(s));
		 * }
		 */
		/*
		 * case 6: {
		 * String s = ;
		 * int expected__ = ;
		 *
		 * return verifyCase(casenum__, expected__, new
		 * TheLuckyString().count(s));
		 * }
		 */
		default:
			return -1;
		}
	}