[ADD] Filtered array added

luisprooc · luisprooc · commit a2bfbe1e2867 · 2021-06-22T12:16:15.000-04:00
diff --git a/README.md b/README.md
@@ -239,3 +239,20 @@ rangeOfNumbers(6, 9) should return [6, 7, 8, 9].
 rangeOfNumbers(4, 4) should return [4].
 ```
 
+
+## Filtered Array
+
+We have defined a function, filteredArray, which takes arr, a nested array, and elem as arguments, and returns a new array. elem represents an element that may or may not be present on one or more of the arrays nested within arr. Modify the function, using a for loop, to return a filtered version of the passed array such that any array nested within arr containing elem has been removed.
+
+
+```javascript
+filteredArray([[10, 8, 3], [14, 6, 23], [3, 18, 6]], 18) should return [[10, 8, 3], [14, 6, 23]]
+
+filteredArray([["trumpets", 2], ["flutes", 4], ["saxophones", 2]], 2) should return [["flutes", 4]]
+
+filteredArray([["amy", "beth", "sam"], ["dave", "sean", "peter"]], "peter") should return [["amy", "beth", "sam"]]
+
+filteredArray([[3, 2, 3], [1, 6, 3], [3, 13, 26], [19, 3, 9]], 3) should return []
+
+The filteredArray function should utilize a for loop
+```
diff --git a/src/filteredArray.js b/src/filteredArray.js
@@ -0,0 +1,11 @@
+function filteredArray(arr, elem) {
+    let newArr = [];
+    for(let i = 0; i < arr.length; ++i){
+        if(arr[i].indexOf(elem) === -1){
+            newArr.push(arr[i])
+        } 
+    }
+    return newArr;
+}
+
+console.log(filteredArray([["trumpets", 2], ["flutes", 4], ["saxophones", 2]], 2));
