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without.js
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without.js
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const assertArraysEqual = function (arr1, arr2) {
if (eqArrays(arr1, arr2)){
console.log(`✅✅✅ Assertion Passed: ${arr1} === ${arr2}`);
} else {
console.log(`❌❌❌ Assertion Failed: ${arr1} !== ${arr2}`);
}
};
const eqArrays = function(arr1, arr2) {
if (arr1.length !== arr2.length) {
return false;
}
for (let i = 0; i < arr1.length; i++) {
if (arr1[i] !== arr2[i]) {
return false;
}
}
return true;
}
const without = function(source, itemsToRemove) {
let newArray = [];
if (itemsToRemove.length === 0) {
return source.slice();
}
for (let i = 0; i < source.length; i++) {
let removeItem = false;
for (let j = 0; j < itemsToRemove.length; j++) {
if (source[i] === itemsToRemove[j]) {
removeItem = true;
break;
}
}
if(removeItem === false) {
newArray.push(source[i]);
}
}
return newArray;
}
// TESTS
const words = ["hello", "world", "lighthouse"];
without(words, ["lighthouse"]); // no need to capture return value for this test case
// Make sure the original array was not altered by the without function
assertArraysEqual(words, ["hello", "world", "lighthouse"]);
console.log(without([1, 2, 3], [1])) // => [2, 3]
console.log(without(["1", "2", "3"], [1, 2, "3"])) // => ["1", "2"]
console.log(without(["banana", "apple", "pear"], ["apple"])); // => ["banana" "pear"]
console.log(without(["banana", "apple", "pear"], ["banana"])); // => ["apple" "pear"]
console.log(without(["banana", "apple", "pear"], [])); // => ["banana", "apple" "pear"]
console.log(without(["banana", "apple", "pear"], ["banana", "apple", "pear"])); // => []