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 accepted
tag: string
tag: JavaScript
105. find the first duplicate character in a string
JavaScript
string
easy
1420 accepted
102. validate string of parentheses
JavaScript
Algorithm
string
easy
1273 accepted
97. compress a string
JavaScript
string
easy
1187 accepted
173. uncompress string
JavaScript
string
algorithm
medium
1142 accepted
166. validate number string
JavaScript
Algorithm
string
medium
728 accepted
111. Count palindromic substrings
JavaScript
Algorithm
string
medium
633 accepted
112. remove duplicate characters in a string
JavaScript
Algorithm
string
medium
532 accepted