filter_geese.js

// Write a function that takes a list of strings as an argument and returns a filtered list 
// containing the same elements but with the 'geese' removed.

// The geese are any strings in the following array, which is pre-populated in your solution:

//   ["African", "Roman Tufted", "Toulouse", "Pilgrim", "Steinbacher"]
// For example, if this array were passed as an argument:

//  ["Mallard", "Hook Bill", "African", "Crested", "Pilgrim", "Toulouse", "Blue Swedish"]
// Your function would return the following array:

// ["Mallard", "Hook Bill", "Crested", "Blue Swedish"]
// The elements in the returned array should be in the same order as
//     in the initial array passed to your function, albeit with the 'geese' removed.
//     Note that all of the strings will be in the same case as those provided, and 
//     some elements may be repeated.

function gooseFilter (birds) {
    let geese = ["African", "Roman Tufted", "Toulouse", "Pilgrim", "Steinbacher"];
    
    // return an array containing all of the strings in the input array except those that match strings in geese
    return birds.filter(b => !geese.includes(b))
};

// option 2

function gooseFilter2 (birds) {
    let geese = ["African", "Roman Tufted", "Toulouse", "Pilgrim", "Steinbacher"];
    
    let newArray = [];
    for (var i = 0; i < birds.length; i++) {
        if (!geese.includes(birds[i])) {
            newArray.push(birds[i]);
        }
    }
    return newArray;
};