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without.js
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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;
};
//assertArrayEqual function
const assertArrayEqual = function(arr1, arr2) {
if (eqArrays(arr1, arr2) {
console.log(`\u{1F603} Assertion Passed:${arr1} === ${arr2}`);
} else {
console.log(`\u{1F62E} Assertion Failed:${arr1} !== ${arr2}`);
}
};
const without = function(source, itemsToRemove) {
let newArray [];
//loop
for (let i = 0; i < source.length; i++) {
if (!itemsToRemove.includes(source[i])) {
newArray.push(source[i]);
}
}
return newArray;
};
//tests
console.log(without([1, 2, 3], [1])); // => [2, 3]
console.log(without(["1", "2", "3"], [1, 2, "3"])); // => ["1", "2"]
//more 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"]);