AlienAndPassword.java

import java.util.*;
import java.util.regex.*;
import java.text.*;
import java.math.*;

public class AlienAndPassword {
	public int getNumber(String S) {
		HashSet<String> set = new HashSet<>();

        for (int i = 0; i < S.length(); i++) {
			set.add(S.substring(0, i) + S.substring(i + 1));
		}
		return set.size();
	}

	// BEGIN KAWIGIEDIT TESTING
	// Generated by KawigiEdit-pf 2.3.0
	private static boolean KawigiEdit_RunTest(int testNum, String p0,
			boolean hasAnswer, int p1) {
		System.out.print("Test " + testNum + ": [" + "\"" + p0 + "\"");
		System.out.println("]");
		AlienAndPassword obj;
		int answer;
		obj = new AlienAndPassword();
		long startTime = System.currentTimeMillis();
		answer = obj.getNumber(p0);
		long endTime = System.currentTimeMillis();
		boolean res;
		res = true;
		System.out.println("Time: " + (endTime - startTime) / 1000.0
				+ " seconds");
		if (hasAnswer) {
			System.out.println("Desired answer:");
			System.out.println("\t" + p1);
		}
		System.out.println("Your answer:");
		System.out.println("\t" + answer);
		if (hasAnswer) {
			res = answer == p1;
		}
		if (!res) {
			System.out.println("DOESN'T MATCH!!!!");
		} else if ((endTime - startTime) / 1000.0 >= 2) {
			System.out.println("FAIL the timeout");
			res = false;
		} else if (hasAnswer) {
			System.out.println("Match :-)");
		} else {
			System.out.println("OK, but is it right?");
		}
		System.out.println("");
		return res;
	}

	public static void main(String[] args) {
		boolean all_right;
		boolean disabled;
		boolean tests_disabled;
		all_right = true;
		tests_disabled = false;

		String p0;
		int p1;

		// ----- test 0 -----
		disabled = false;
		p0 = "A";
		p1 = 1;
		all_right = (disabled || KawigiEdit_RunTest(0, p0, true, p1))
				&& all_right;
		tests_disabled = tests_disabled || disabled;
		// ------------------

		// ----- test 1 -----
		disabled = false;
		p0 = "ABA";
		p1 = 3;
		all_right = (disabled || KawigiEdit_RunTest(1, p0, true, p1))
				&& all_right;
		tests_disabled = tests_disabled || disabled;
		// ------------------

		// ----- test 2 -----
		disabled = false;
		p0 = "AABACCCCABAA";
		p1 = 7;
		all_right = (disabled || KawigiEdit_RunTest(2, p0, true, p1))
				&& all_right;
		tests_disabled = tests_disabled || disabled;
		// ------------------

		// ----- test 3 -----
		disabled = false;
		p0 = "AGAAGAHHHHFTQLLAPUURQQRRRUFJJSBSZVJZZZ";
		p1 = 26;
		all_right = (disabled || KawigiEdit_RunTest(3, p0, true, p1))
				&& all_right;
		tests_disabled = tests_disabled || disabled;
		// ------------------

		// ----- test 4 -----
		disabled = false;
		p0 = "ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ";
		p1 = 1;
		all_right = (disabled || KawigiEdit_RunTest(4, p0, true, p1))
				&& all_right;
		tests_disabled = tests_disabled || disabled;
		// ------------------

		if (all_right) {
			if (tests_disabled) {
				System.out
						.println("You're a stud (but some test cases were disabled)!");
			} else {
				System.out.println("You're a stud (at least on given cases)!");
			}
		} else {
			System.out.println("Some of the test cases had errors.");
		}
	}
	// END KAWIGIEDIT TESTING
}

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