BFE
.dev
buy us
a coffee
EN
Practice
Explore
EN
JavaScript Coding Questions
As a Front-End developer, JavaScript is the core skill of everything
Sort
Difficulty
Solved status
Company
Sort: most tried
Difficulty: easy
tag: Algorithm
25. Reorder array with new indexes
JavaScript
Algorithm
easy
11586 tried
167. Intersection of unsorted arrays
JavaScript
Algorithm
easy
11348 tried
162. find the single integer
JavaScript
Algorithm
easy
9543 tried
91. invert a binary tree
JavaScript
Algorithm
easy
5694 tried
47. reverse a linked list
JavaScript
Algorithm
easy
5212 tried
163. integer to roman numerals
JavaScript
Algorithm
easy
4637 tried
120. create `isPrime()`
JavaScript
Algorithm
easy
4056 tried
138. Intersection of two sorted arrays
JavaScript
Algorithm
easy
3901 tried
81. merge sorted arrays
JavaScript
Algorithm
easy
3759 tried
48. search first index with Binary Search(possible duplicate array)
JavaScript
Algorithm
easy
3684 tried
87. longest substring with unique characters
JavaScript
Algorithm
easy
3524 tried
102. validate string of parentheses
JavaScript
Algorithm
string
easy
3263 tried
106. Find two numbers that sum up to 0
JavaScript
Algorithm
easy
3244 tried
109. implement `Math.pow()`
JavaScript
Algorithm
easy
3220 tried
40. implement Bubble Sort
JavaScript
Algorithm
easy
3124 tried
107. Find the largest difference
JavaScript
Algorithm
easy
2975 tried
49. search last index with Binary Search(possible duplicate array)
JavaScript
Algorithm
easy
2799 tried
100. detect circle in linked list
JavaScript
Algorithm
easy
2591 tried
50. search element right before target with Binary Search(possible duplicate array)
JavaScript
Algorithm
easy
2213 tried
62. implement BigInt addition
JavaScript
Algorithm
easy
1996 tried
51. search element right after target with Binary Search(possible duplicate array)
JavaScript
Algorithm
easy
1947 tried
42. implement Insertion Sort
JavaScript
Algorithm
easy
1764 tried
44. implement Selection Sort
JavaScript
Algorithm
easy
1614 tried