4 questions left

src/Program.java

@@ -70,125 +70,81 @@ public class Program {
 	
 	
 	public static int[] ConvertBinaryToInt(String[] binaryArray) {
-		
+		// DONE AND PASSED TEST
 		int[] resultsArray = new int[binaryArray.length];
 		
-		for(int i = 0; i < binaryArray.length; i++)
-		{
-			char[] binaryString = binaryArray[i].toCharArray();
-			int binTotal = 0;
-			int binCM = 1;
-			for (int j = 0; j < binaryString.length; j++) 
+		for(int i = 0; i<binaryArray.length; i++) 
 		{
-				int binIndex = binaryString.length - i - 1;
-				if (binaryString[binIndex] == '1') 
-				{
-					binTotal = binTotal + binCM;
-				}
-				binCM = binCM * 2;
-			}	
+			
+			resultsArray[i] = ConvertASingleWordToInt(binaryArray[i]);
+						
 		}
 		
 		return resultsArray;
 	}	
 	
-		/*for(int i = 0; i<wordArray.length; i++) {
-			
-			resultsArray[i] = ConvertASingleWordToInt(wordArray[i]);
-						
-		}*//*
-		int binTotal = 0;
-		int binCM = 1;
-		char[] binCA = binaryArray.toCharArray();
-		for (int i = 0; i < binCA.length; i++) 
-		{
-			int binIndex = binCA.length - i - 1;
-			if (binCA[binIndex] == '1') 
-			{
-				binTotal = binTotal + binCM;
-			}
-			binCM = binCM * 2;
-		}
-		System.out.println(binTotal);
-		*//*
-		char[] binCA = binaryArray[0].toCharArray();
+	public static int ConvertASingleWordToInt(String someWord) {
 		
 	
-		int binTotal = 0;
+		int result = 0;
 		int binCM = 1;
-		for (int i = 0; i < binCA.length; i++) 
+		char[] binChar = someWord.toCharArray();
+		for (int i = 0; i < binChar.length; i++) 
 		{
-			int binIndex = binCA.length - i - 1;
-			if (binCA[binIndex] == '1') 
+			int binIndex = binChar.length - i - 1;
+			if (binChar[binIndex] == '1') 
 			{
-				binTotal = binTotal + binCM;
+				result = result + binCM;
 			}
 			binCM = binCM * 2;
 		}
 		
-		
-		return resultsArray;
-	}
-	*//*
-	
-	public static int ConvertASingleBinaryToInt(String someBinary) {
-		
-		
-		int result = 0;
-		for(int i = 0; i < binaryArray.length; i++)
-		{
-			
-		}
-		if(someBinary == ) {result = 11;}
-		
-		
 		return result;
 		
 		
 	}
 	
-	/*
-	
-	public static int[] ConvertWordsToInt(String[] wordArray) {
-		
-		int[] resultsArray = new int[wordArray.length];
+	public static int[] ConvertHexToInt(String[] hexArray) {
+		// DONE AND PASSED TEST
+		int[] resultsArray = new int[hexArray.length];
 
-		for(int i = 0; i<wordArray.length; i++) {
+		for(int i = 0; i<hexArray.length; i++) {
 			
-			resultsArray[i] = ConvertASingleWordToInt(wordArray[i]);
+			resultsArray[i] = ConvertHexToInt(hexArray[i]);
 						
 		}
 		
-		return resultsArray;
 		
-	}
-	
-	public static int ConvertASingleWordToInt(String someWord) {
+		return resultsArray;
 
 		
+	}
+	public static int ConvertHexToInt(String hexWord)
+	{
 		int result = 0;
-		
-		if(someWord == "eleven") {result = 11;}
-		
-		
-		return result;
-		
-		
+		int hexCM = 1;
+		char[] hexChar = hexWord.toCharArray();
+		for(int i = 0; i < hexChar.length; i++)
+		{
+			int hexIndex = hexChar.length - i - 1;
+			if(hexChar[hexIndex] == '1') {result = result + (hexCM * 1);}
+			if(hexChar[hexIndex] == '2') {result = result + (hexCM * 2);}
+			if(hexChar[hexIndex] == '3') {result = result + (hexCM * 3);}
+			if(hexChar[hexIndex] == '4') {result = result + (hexCM * 4);}
+			if(hexChar[hexIndex] == '5') {result = result + (hexCM * 5);}
+			if(hexChar[hexIndex] == '6') {result = result + (hexCM * 6);}
+			if(hexChar[hexIndex] == '7') {result = result + (hexCM * 7);}
+			if(hexChar[hexIndex] == '8') {result = result + (hexCM * 8);}
+			if(hexChar[hexIndex] == '9') {result = result + (hexCM * 9);}
+			if(hexChar[hexIndex] == 'A') {result = result + (hexCM * 10);}
+			if(hexChar[hexIndex] == 'B') {result = result + (hexCM * 11);}
+			if(hexChar[hexIndex] == 'C') {result = result + (hexCM * 12);}
+			if(hexChar[hexIndex] == 'D') {result = result + (hexCM * 13);}
+			if(hexChar[hexIndex] == 'E') {result = result + (hexCM * 14);}
+			if(hexChar[hexIndex] == 'F') {result = result + (hexCM * 15);}
+			hexCM = hexCM * 16;
 		}
-	*/
-	
-	
-	public static int[] ConvertHexToInt(String[] hexArray) {
-
-		int[] resultsArray = new int[hexArray.length];
-
-		
-		
-		
-		// same on this question
-		return resultsArray;
-
-		
+		return result;
 	}
 	
 	
@@ -253,8 +209,6 @@ public class Program {
 			resultsArray[i] = intersectList.get(i);
 		}
 		return resultsArray;
-
-		
 	}
 	
 	public static int[] Difference(int[] intArrayA, int[] intArrayB) {
@@ -262,23 +216,26 @@ public class Program {
 		ArrayList<Integer> differenceList = new ArrayList<Integer>();
 
 		
-		for(int j = 0; j < intArrayA.length; j++)
+		for(int i =0; i < intArrayA.length; i++)
 		{
-			
-			for(int k = 0; k < intArrayB.length; k++)
+			differenceList.add(intArrayA[i]);
+		}
+		for(int j =0; j < intArrayB.length; j++)
 		{
-				
-				if(intArrayA[j] != intArrayB[k])
+			differenceList.add(intArrayB[j]);
+		}
+		for(int k = 0; k < differenceList.size(); k++)
+		{
+			for(int l = 0; l < intArrayB.length; l++)
 			{
-					differenceList.add(intArrayA[j]);
+				if(differenceList.get(k) == intArrayB[l])
+				{
+					differenceList.remove(k);
 				}
-				
 			}
 			
 		}
 
-		
-
 		int[] resultsArray = new int[differenceList.size()];
 		for(int i = 0; i<differenceList.size(); i++) {
 			resultsArray[i] = differenceList.get(i);
@@ -287,10 +244,6 @@ public class Program {
 		return resultsArray;
 	}
 	
-	
-	
-	
-	
 	public static int Sum (int[] input) {
 		
 		int result = 0;
@@ -323,16 +276,57 @@ public class Program {
 		return output / input.length;
 	}
 
-	public static int[] ConvertBase20ToInt(String[] b20array) {
 	
+	
+	
+	public static int[] ConvertBase20ToInt(String[] b20array) {
+		// DONE AND PASSED TEST
 		int[] resultsArray = new int[b20array.length];
 
+		for(int i = 0; i<b20array.length; i++) {
+			
+			resultsArray[i] = Convert20ToInt(b20array[i]);
+						
+		}
 		
 		return resultsArray;
 
 		
 	}
 	
+	public static int Convert20ToInt(String twentyWord)
+	{
+		int result = 0;
+		int hexCM = 1;
+		char[] hexChar = twentyWord.toCharArray();
+		for(int i = 0; i < hexChar.length; i++)
+		{
+			int hexIndex = hexChar.length - i - 1;
+			if(hexChar[hexIndex] == '0') {result = result + (hexCM * 0);}
+			if(hexChar[hexIndex] == '1') {result = result + (hexCM * 1);}
+			if(hexChar[hexIndex] == '2') {result = result + (hexCM * 2);}
+			if(hexChar[hexIndex] == '3') {result = result + (hexCM * 3);}
+			if(hexChar[hexIndex] == '4') {result = result + (hexCM * 4);}
+			if(hexChar[hexIndex] == '5') {result = result + (hexCM * 5);}
+			if(hexChar[hexIndex] == '6') {result = result + (hexCM * 6);}
+			if(hexChar[hexIndex] == '7') {result = result + (hexCM * 7);}
+			if(hexChar[hexIndex] == '8') {result = result + (hexCM * 8);}
+			if(hexChar[hexIndex] == '9') {result = result + (hexCM * 9);}
+			if(hexChar[hexIndex] == 'A') {result = result + (hexCM * 10);}
+			if(hexChar[hexIndex] == 'B') {result = result + (hexCM * 11);}
+			if(hexChar[hexIndex] == 'C') {result = result + (hexCM * 12);}
+			if(hexChar[hexIndex] == 'D') {result = result + (hexCM * 13);}
+			if(hexChar[hexIndex] == 'E') {result = result + (hexCM * 14);}
+			if(hexChar[hexIndex] == 'F') {result = result + (hexCM * 15);}
+			if(hexChar[hexIndex] == 'G') {result = result + (hexCM * 16);}
+			if(hexChar[hexIndex] == 'H') {result = result + (hexCM * 17);}
+			if(hexChar[hexIndex] == 'I') {result = result + (hexCM * 18);}
+			if(hexChar[hexIndex] == 'J') {result = result + (hexCM * 19);}
+			hexCM = hexCM * 20;
+		}
+		return result;
+	}
+	
 	
 	
 	
@@ -371,19 +365,35 @@ public static int Range (int[] input) {
 
 
 
-
 	public static int[] ConvertBase3ToInt(String[] b3array) {
-
+		// DONE AND PASSED TEST
 		int[] resultsArray = new int[b3array.length];
 
+		for(int i = 0; i<b3array.length; i++) 
+		{
 			
+			resultsArray[i] = Convert3ToInt(b3array[i]);
 						
+		}
 		
 		return resultsArray;
+	}
 	
+	public static int Convert3ToInt(String someWord) {
 		
-	}
 		
+		int result = 0;
+		int binCM = 1;
+		char[] binChar = someWord.toCharArray();
+		for (int i = 0; i < binChar.length; i++) 
+		{
+			int binIndex = binChar.length - i - 1;
+			if (binChar[binIndex] == '1') {result = result + binCM;}
+			if (binChar[binIndex] == '2') {result = result + (binCM * 2);}
+			binCM = binCM * 3;
+		}
+		return result;
+	}