Length and two values.

Author: esadakman

7_kyu/alternate.md

@@ -0,0 +1,26 @@
+## [Length and two values.](https://www.codewars.com/kata/62a611067274990047f431a8/train/javascript)
+
+##### Story
+
+- Given an integer n and two other values, build an array of size n filled with these two values alternating.
+
+#### Examples (input -> output):
+
+```js
+5, true, false     -->  [true, false, true, false, true]
+10, "blue", "red"  -->  ["blue", "red", "blue", "red", "blue", "red", "blue", "red", "blue", "red"]
+0, "one", "two"    -->  []
+```
+
+#### Solution:
+
+```js
+function alternate(n, firstValue, secondValue){
+  return Array.from({length: n}, (_, i) => i % 2 === 0 ? firstValue : secondValue);
+}
+
+
+console.log(alternate(5, true, false));     // [true, false, true, false, true]
+console.log(alternate(10, "blue", "red"));  // ["blue", "red", "blue", "red", "blue", "red", "blue", "red", "blue", "red"]
+console.log(alternate(0, "one", "two"));    // []
+```

README.md

@@ -387,7 +387,7 @@ Solutions to CodeWars programming tasks. I try to update every day
   </tr>  
   <tr>
     <td><a href=" " > </a></td>
-    <td><a href="7 kyu" > </a></td>
+    <td><a href="https://github.com/esadakman/javaScript-coding-challenges/blob/master/7_kyu/alternate.md" >alternate</a></td> 
     <td><a href="https://github.com/esadakman/javaScript-coding-challenges/blob/master/6_kyu/simpleFrequencySort.md" >simpleFrequencySort</a></td> 
     <td><a href="5 kyu" > </a></td>
     <td><a href="others " ></a></td>