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Lab7 Arrays #16

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2 changes: 1 addition & 1 deletion .eslintrc.json
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@
],
"linebreak-style": [
"error",
"unix"
"windows"
],
"quotes": [
"error",
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7 changes: 5 additions & 2 deletions Exercises/1-remove.js
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Original file line number Diff line number Diff line change
@@ -1,7 +1,10 @@
'use strict';

const removeElement = (array, item) => {
// Remove item from array modifying original array
const index = array.indexOf(item);
if (index !== -1) array.splice(index, 1);
};

const array = [1, 2, 3, 4, 5, 6, 7];
removeElement(array, 5);
console.log(array);
module.exports = { removeElement };
9 changes: 7 additions & 2 deletions Exercises/2-elements.js
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Original file line number Diff line number Diff line change
@@ -1,7 +1,12 @@
'use strict';

const removeElements = (array, ...items) => {
// Remove multiple items from array modifying original array
for (let i = 0; i < items.length; i++) {
const index = array.indexOf(items[i]);
if (index !== -1) array.splice(index, 1);
}
};

const array = ['Kiev', 'Beijing', 'Lima', 'Saratov'];
removeElements(array, 'Lima', 'Berlin', 'Kiev');
console.log(array);
module.exports = { removeElements };
16 changes: 11 additions & 5 deletions Exercises/3-unique.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,14 @@
'use strict';

// Create and return a new array without duplicate elements
// Don't modify initial array

const unique = (array) => [];

const unique = (array) => {
const result = [];
for (const str of array) {
if (!result.includes(str)) {
result.push(str);
}
}
return result;
};
const result = unique([2, 1, 1, 3, 2]);
console.log(result);
module.exports = { unique };
17 changes: 12 additions & 5 deletions Exercises/4-difference.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,15 @@
'use strict';

// Find difference of two arrays
// elements from array1 that are not includes in array2

const difference = (array1, array2) => [];

const difference = (array1, array2) => {
const array = [];
for (let i = 0; i < array1.length; i++) {
const item = array1[i];
if (!array2.includes(item)) array.push(item);
}
return array;
};
const array1 = [7, -2, 10, 5, 0];
const array2 = [0, 10];
const result = difference(array1, array2);
console.log(result);
module.exports = { difference };
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