drillz

basicMath/MathUtilities.js

@@ -2,19 +2,19 @@ class MathUtilities {
 
 
     add(baseValue, valueToAdd){
-        return -1;
+        return baseValue + valueToAdd;
     }
 
     subtract(baseValue, valueToAdd){
-        return -1;
+        return baseValue - valueToAdd;
     }
 
     divide(baseValue, valueToAdd){
-        return -1;
+        return baseValue / valueToAdd;
     }
 
     multiply(baseValue, valueToAdd){
-        return -1;
+        return baseValue * valueToAdd;
     }
 }
 

basicMath/MathUtilities.test.js

@@ -74,7 +74,7 @@ test("Test 2 Integer Division", () => {
     let addedValue = 1;
 
     // When
-    let expected = 127;
+    let expected = 2;
     let actual = math.divide(baseValue, addedValue);
     //Then
     expect(actual).toEqual(expected);

strangerStrings/StrangerStrings.js

@@ -1,35 +1,64 @@
 class StrangerStrings {
 
     getHelloWorld(){
-        return null;
+        let helloWorld = "Hello World"
+        return helloWorld;
     }
 
     concatenation(firstSegment, secondSegment){
-        return null;
+        return firstSegment + secondSegment;
     }
 
     getPrefix(input){
-        return null;
+
+       /* let FirstLetter = input[0]
+        let SecondLetter = input [1]
+        let ThirdLetter = input [2]
+        return FirstLetter + SecondLetter + ThirdLetter; */
+        return input.substr(0,3);
     }
 
     getSuffix(input){
-        return null;
+
+        let FourthLetter = input[input.length - 3];
+        let FifthLetter = input[input.length - 2];
+        let lastLetter = input[input.length - 1];
+        return FourthLetter + FifthLetter + lastLetter;
+
     }
 
     getMiddleCharacter(input){
-        return null;
+        let inputLength = input.length;
+        let middle = Math.floor(inputLength/2);
+        if (inputLength % 2 == 0){ 
+            // if even
+            return input[middle - 1] + input[middle];
+        } else {
+            //if odd
+         return input[middle];
+        }
     }
 
-    getFirstWord(input){
-        return null;
+    getFirstWord(inputValue){
+        let x = inputValue.split(" ");
+        let firstWord = x[0];
+        return firstWord;
     }
 
-    getSecondWord(spaceDelimnatedInput){
-        return null;
+    getSecondWord(inputValue){
+        let x = inputValue.split(" ");
+        let secondWord = x[1];
+        return secondWord;
     }
 
-    reverse(input){
-        return null;
+    reverse(inputValue){
+        let x = inputValue.split(""); 
+        // x = [w,u,t,a,n,g,c,l,a,n]
+        let rev = x.reverse();
+        // rev= n,a,l,c,g,n,a,t,u,w
+        let together = rev.join("");
+        // join = nalcgnatuw
+        return together;
     }
 }
 

strangerStrings/StrangerStrings.test.js

@@ -58,10 +58,10 @@ test("return the last 3 characters of `input`", () => {
 });
 
 
-test("return the middle character of `inputValue`", () => {
+test("return the middle character of `input`", () => {
     // Given
     let strangerStrings = new StrangerStrings();
-    let inputValue = 'MethodMan';
+    let input = 'MethodMan';
 
     let expected = "o";
 
@@ -76,7 +76,7 @@ test("return the first sequence of characters", () => {
     // Given
     let strangerStrings = new StrangerStrings();
     let inputValue = 'Wutang Clan';
-
+// inputValue=[Wutang, Clan]
     let expected = "Wutang";