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JavaScript Coding Questions
As a Front-End developer, JavaScript is the core skill of everything
Sort
Difficulty
Solved status
Company
Sort: most accepted
tag: Algorithm
58. get DOM tree height
JavaScript
Algorithm
DOM
medium
4554 accepted
10. first bad version
JavaScript
Algorithm
medium
4545 accepted
167. Intersection of unsorted arrays
JavaScript
Algorithm
easy
4344 accepted
162. find the single integer
JavaScript
Algorithm
easy
3914 accepted
165. remove characters
Algorithm
medium
3726 accepted
25. Reorder array with new indexes
JavaScript
Algorithm
easy
3687 accepted
113. Virtual DOM I
JavaScript
Algorithm
DOM
medium
3087 accepted
13. Implement a Queue by using Stack
JavaScript
Algorithm
medium
2541 accepted
68. get DOM tags
JavaScript
Algorithm
DOM
medium
2520 accepted
104. Traverse DOM level by level
JavaScript
Algorithm
DOM
medium
2514 accepted
91. invert a binary tree
JavaScript
Algorithm
easy
2422 accepted
110. serialize and deserialize binary tree
JavaScript
Algorithm
medium
2067 accepted
168. move zeros
JavaScript
Algorithm
medium
1978 accepted
47. reverse a linked list
JavaScript
Algorithm
easy
1808 accepted
63. create `_.cloneDeep()`
JavaScript
Algorithm
Lodash
medium
1794 accepted
163. integer to roman numerals
JavaScript
Algorithm
easy
1634 accepted
40. implement Bubble Sort
JavaScript
Algorithm
easy
1565 accepted
103. implement Math.sqrt()
JavaScript
Algorithm
medium
1536 accepted
107. Find the largest difference
JavaScript
Algorithm
easy
1402 accepted
81. merge sorted arrays
JavaScript
Algorithm
easy
1361 accepted
138. Intersection of two sorted arrays
JavaScript
Algorithm
easy
1348 accepted
120. create `isPrime()`
JavaScript
Algorithm
easy
1274 accepted
106. Find two numbers that sum up to 0
JavaScript
Algorithm
easy
1269 accepted
102. validate string of parentheses
JavaScript
Algorithm
string
easy
1259 accepted
48. search first index with Binary Search(possible duplicate array)
JavaScript
Algorithm
easy
1201 accepted
86. Generate Fibonacci Number
JavaScript
Algorithm
medium
1180 accepted
87. longest substring with unique characters
JavaScript
Algorithm
easy
1151 accepted
66. remove duplicates from an array
JavaScript
Algorithm
medium
1138 accepted
152. Find Top k Elements
JavaScript
Algorithm
medium
1079 accepted
109. implement `Math.pow()`
JavaScript
Algorithm
easy
1055 accepted
49. search last index with Binary Search(possible duplicate array)
JavaScript
Algorithm
easy
1004 accepted
24. create a Priority Queue in JavaScript
JavaScript
Algorithm
medium
1004 accepted
55. highlight keywords in HTML string
JavaScript
Algorithm
medium
1000 accepted
100. detect circle in linked list
JavaScript
Algorithm
easy
928 accepted
42. implement Insertion Sort
JavaScript
Algorithm
easy
927 accepted
43. implement Quick Sort
JavaScript
Algorithm
medium
894 accepted
41. implement Merge Sort
JavaScript
Algorithm
medium
801 accepted
44. implement Selection Sort
JavaScript
Algorithm
easy
793 accepted
50. search element right before target with Binary Search(possible duplicate array)
JavaScript
Algorithm
easy
792 accepted
82. find available meeting slots
JavaScript
Algorithm
medium
772 accepted
51. search element right after target with Binary Search(possible duplicate array)
JavaScript
Algorithm
easy
724 accepted
166. validate number string
JavaScript
Algorithm
string
medium
722 accepted
136. find median of two sorted array
JavaScript
Algorithm
medium
684 accepted
45. find the K-th largest element in an unsorted array
JavaScript
Algorithm
medium
668 accepted
62. implement BigInt addition
JavaScript
Algorithm
easy
648 accepted
111. Count palindromic substrings
JavaScript
Algorithm
string
medium
630 accepted
108. Implement a Stack by using Queue
JavaScript
Algorithm
medium
597 accepted
112. remove duplicate characters in a string
JavaScript
Algorithm
string
medium
528 accepted
137. binary tree vertical traversal
JavaScript
Algorithm
hard?
463 accepted
75. implement BigInt subtraction
JavaScript
Algorithm
medium
369 accepted
169. LRU - Chrome storage automatic eviction
JavaScript
Algorithm
medium
307 accepted
124. calculate arithmetic expression
JavaScript
Algorithm
medium
195 accepted
126. BigDecimal addition
JavaScript
Algorithm
medium
54 accepted
129. BigDecimal Division
JavaScript
Algorithm
medium
34 accepted
128. BigDecimal multiplication
JavaScript
Algorithm
medium
33 accepted
127. BigDecimal subtraction
JavaScript
Algorithm
few challengers
27 accepted