static int runTestCase(int casenum__) {
		switch (casenum__) {
		case 0: {
			String numberA = "3^100";
			String numberB = "2^150";
			String expected__ = "3^100";

			return verifyCase(casenum__, expected__, new MassiveNumbers().getLargest(numberA, numberB));
		}
		case 1: {
			String numberA = "1^1000";
			String numberB = "2^1";
			String expected__ = "2^1";

			return verifyCase(casenum__, expected__, new MassiveNumbers().getLargest(numberA, numberB));
		}
		case 2: {
			String numberA = "893^605";
			String numberB = "396^906";
			String expected__ = "396^906";

			return verifyCase(casenum__, expected__, new MassiveNumbers().getLargest(numberA, numberB));
		}
		case 3: {
			String numberA = "999^1000";
			String numberB = "1000^999";
			String expected__ = "999^1000";

			return verifyCase(casenum__, expected__, new MassiveNumbers().getLargest(numberA, numberB));
		}

		// custom cases

		/*
		 * case 4: {
		 * String numberA = ;
		 * String numberB = ;
		 * String expected__ = ;
		 * 
		 * return verifyCase(casenum__, expected__, new
		 * MassiveNumbers().getLargest(numberA, numberB));
		 * }
		 */
		/*
		 * case 5: {
		 * String numberA = ;
		 * String numberB = ;
		 * String expected__ = ;
		 * 
		 * return verifyCase(casenum__, expected__, new
		 * MassiveNumbers().getLargest(numberA, numberB));
		 * }
		 */
		/*
		 * case 6: {
		 * String numberA = ;
		 * String numberB = ;
		 * String expected__ = ;
		 * 
		 * return verifyCase(casenum__, expected__, new
		 * MassiveNumbers().getLargest(numberA, numberB));
		 * }
		 */
		default:
			return -1;
		}
	}