Added isPandigital function

pom.xml

@@ -9,7 +9,7 @@
 	<version>1.0-SNAPSHOT</version>
 
 	<name>myClasses</name>
-	<!-- FIXME change it to the project's website -->
+	<!-- TODO: change it to the project's website -->
 	<url>http://www.example.com</url>
 
 	<properties>

src/main/java/mattrixwv/StringAlgorithms.java

@@ -1,7 +1,7 @@
 //JavaClasses/src/main/java/mattrixwv/StringAlgorithms.java
 //Matthew Ellison
 // Created: 07-03-21
-//Modified: 07-03-21
+//Modified: 10-11-21
 //This class contains algorithms for strings that I've found it useful to keep around
 /*
 	Copyright (C) 2021  Matthew Ellison
@@ -86,5 +86,29 @@ public class StringAlgorithms{
 			return false;
 		}
 	}
+	//Returns true if the string passed to it is a pandigital
+	public static boolean isPandigital(String str, char bottom, char top){
+		//Return false if top < bottom
+		if(top < bottom){
+			return false;
+		}
 
+		//Return false if the wrong number of characters are in the string
+		if(str.length() != (top - bottom + 1)){
+			return false;
+		}
+
+		//Make sure that all of the needed characters are in the string exactly one time
+		for(char cnt = bottom;cnt <= top;++cnt){
+			if(findNumOccurrence(str, cnt) != 1){
+				return false;
+			}
+		}
+
+		//If the function has reached this part it has passed all of the falsifying tests
+		return true;
+	}
+	public static boolean isPandigital(String str){
+		return isPandigital(str, '1', '9');
+	}
 }

src/test/java/mattrixwv/TestStringAlgorithms.java

@@ -1,7 +1,7 @@
 //JavaClasses/src/test/java/mattrixwv/TestStringAlgorithms.java
 //Matthew Ellison
 // Created: 07-03-21
-//Modified: 07-03-21
+//Modified: 10-11-21
 //This class contains tests for my number algorithms
 /*
 	Copyright (C) 2021  Matthew Ellison
@@ -76,4 +76,42 @@ public class TestStringAlgorithms{
 		answer = StringAlgorithms.isPalindrome(str);
 		assertEquals("isPalindrome 3 failed", correctAnswer, answer);
 	}
+	@Test
+	public void testIsPandigital(){
+		//Test 1
+		String num = "123456789";
+		boolean correctAnswer = true;
+		boolean answer = StringAlgorithms.isPandigital(num);
+		assertEquals("isPandigital 1 failed", correctAnswer, answer);
+
+		//Test 2
+		num = "123";
+		correctAnswer = true;
+		answer = StringAlgorithms.isPandigital(num, '1', '3');
+		assertEquals("isPandigital 2 failed", correctAnswer, answer);
+
+		//Test 3
+		num = "123";
+		correctAnswer = false;
+		answer = StringAlgorithms.isPandigital(num);
+		assertEquals("isPandigital 3 failed", correctAnswer, answer);
+
+		//Test 4
+		num = "123";
+		correctAnswer = false;
+		answer = StringAlgorithms.isPandigital(num, '3', '1');
+		assertEquals("inPandigital 4 failed", correctAnswer, answer);
+
+		//Test 5
+		num = "1";
+		correctAnswer = true;
+		answer = StringAlgorithms.isPandigital(num, '1', '1');
+		assertEquals("inPandigital 5 failed", correctAnswer, answer);
+
+		//Test 6
+		num = "112";
+		correctAnswer = false;
+		answer = StringAlgorithms.isPandigital(num, '1', '3');
+		assertEquals("inPandigital 6 failed", correctAnswer, answer);
+	}
 }