JavaScript Strings Coding Practice Problems
Last Updated :
23 Apr, 2025
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Strings are one of the most essential data types in JavaScript, used for handling and manipulating text-based data. This curated list of JavaScript string practice problems covers everything master JavaScript Strings. Whether you're a beginner or an experienced developer, these problems will enhance your JavaScript string manipulation skills!
Strings Practice Problems
Easy
- Length of String
- First Occurrence
- Reverse String
- Pangram Checking
- Count Words in String
- Slice The String
- Find Pattern
- Print Alphabets
- Reverse digits
- First Repeated Character
- Reverse Words
- Roman Number to Integer
- Remove Duplicates
- Longest Common Prefix
- Uncommon characters
- Minimum indexed character
- License Key Formatting
- Panagram Checking
Medium
- Anagram
- Find one extra character
- Substring
- GetLine 1
- Palindrome String
- Power Set
- Permutations of a String
- Next Permutation
- String Rotated by 2 Places
- Longest substring with distinct characters
- Search Pattern (Z-algorithm)
- Find largest word in dictionary
- Validate an IP Address
- Equal 0, 1 and 2
- Add Binary Strings
- Sum of two large numbers
- Multiply two strings
- Look and Say Pattern
- Minimum Repeating Substring
- Excel Sheet | Part - 1
- Form a palindrome
- Next higher palindromic number
- Longest Palindromic Subsequence
- Length of the longest substring
- Substrings of length k with k-1 distinct elements
- Substrings with K Distinct
- Interleaved Strings
- Print Anagrams Together
- Rank The Permutations
- Minimum Deletions
Hard
- Implement Atoi
- Search Pattern (Rabin-Karp Algorithm)
- Longest Prefix Suffix
- Smallest window containing all characters
- Restrictive Candy Crush
- Shortest Common Supersequence
- Number of distinct words with K maximum contiguous vowels
- Longest substring to form a Palindrome
- Longest valid Parentheses
- Distinct palindromic substrings
- Find the N-th character
- Longest Prefix Suffix
- Longest Substring with K Uniques
- k-Anagram
- Number of distinct subsequences
