Added a function to get all permutations of a

string

testAlgorithms.java

@@ -1,7 +1,7 @@
 //Java/JavaClasses/testAlgorithms.java
 //Matthew Ellison
 // Created: 03-02-19
-//Modified: 03-02-19
+//Modified: 03-24-19
 //This program runs tests on all function in the Algorithms library
 /*
 Copyright (C) 2019  Matthew Ellison
@@ -88,6 +88,11 @@ public class testAlgorithms{
 		timer.stop();
 		System.out.println("It took " + timer.getStr() + " to run this test\n");
 
+		timer.start();
+		testGetPermutations();
+		timer.stop();
+		System.out.println("It took " + timer.getStr() + " to run this test\n");
+
 		//Print a closing message
 		System.out.println("Tests completed");
 	}
@@ -571,4 +576,56 @@ public class testAlgorithms{
 			System.out.println("isFound passed all tests");
 		}
 	}
-}
+	//This function tests the getPermutations function
+	private static void testGetPermutations(){
+		Boolean failed = false;
+		//Test 1
+		String permString = "012";
+		ArrayList<String> correctAnswer = new ArrayList<String>(Arrays.asList("012", "021", "102", "120", "201", "210"));
+		ArrayList<String> answer = Algorithms.getPermutations(permString);
+		if(!answer.equals(correctAnswer)){
+			System.out.println("getPermutations failed the first test");
+			System.out.println(answer.toString());
+			failed = true;
+		}
+
+		//Print a message if all of the tests passed
+		if(!failed){
+			System.out.println("getPermutations passed all tests");
+		}
+	}
+}
+
+/* Results:
+getPrimes passed all tests
+It took 5.209 milliseconds to run this test
+
+getNumPrimes passed all tests
+It took 1.464 milliseconds to run this test
+
+getFactors passed all tests
+It took 456.699 microseconds to run this test
+
+getDivisors passed all tests
+It took 428.300 microseconds to run this test
+
+getFib passed all tests
+It took 6.107 milliseconds to run this test
+
+getAllFib passed all tests
+It took 708.100 microseconds to run this test
+
+getSum passed all tests
+It took 1.736 milliseconds to run this test
+
+getProd passed all tests
+It took 541.600 microseconds to run this test
+
+isFound passed all tests
+It took 537.700 microseconds to run this test
+
+getPermutations passed all tests
+It took 336.500 microseconds to run this test
+
+Tests completed
+*/