Iterate Through All an Array’s Items Using For Loops

Hint 1

  • A nested for loop must be used to search through every element in the array.

    for (let i = 0; i < arr.length; i++) {

    Hint 2

  • Every element of the array must then be compared to the elem parameter passed through the filteredArray() function.

    if (arr[i].indexOf(elem)==-1){

    Hint 3

  • If a match is NOT found then newArr have that entire subarray added. The push() function is very useful here.

    newArr.push(arr[i]);
  • Once that entire subarray is added to newArr the loop continue with the next element.

Solution:

function filteredArray(arr, elem) {
  let newArr = [];
  // change code below this line
  
 for (let i = 0; i < arr.length; i++) { 
    if (arr[i].indexOf(elem)==-1){ //Checks every parameter for the element and if is NOT there continues the code
          newArr.push(arr[i]); //Inserts the element of the array in the new filtered array
            };
          };

  // change code above this line
  return newArr;
};
// change code here to test different cases:
console.log(filteredArray([[3, 2, 3], [1, 6, 3], [3, 13, 26], [19, 3, 9]], 3));