Dashboard Questions Topics Companies Sheets

String

Topic

744 coding problems covering String concepts. Master this topic and improve your problem-solving skills.

744

Problems

214

Easy

369

Medium

161

Hard

Difficulty

All744 Easy214 Medium369 Hard161

Title	Solve	Difficulty	Companies	Topics
2030. Smallest K-Length Subsequence With Occurrences of a Letter	Solve	Hard	Deutsche Bank	Greedy Monotonic Stack+2
2056. Number of Valid Move Combinations On Chessboard	Solve	Hard	PayPal	Array Backtracking+2
2060. Check if an Original String Exists Given Two Encoded Strings	Solve	Hard	BitGo+1	Dynamic Programming String
2147. Number of Ways to Divide a Long Corridor	Solve	Hard	Google+1	Dynamic Programming Math+1
2156. Find Substring With Given Hash Value	Solve	Hard	-	Hash Function Rolling Hash+2
2157. Groups of Strings	Solve	Hard	Lowe	Bit Manipulation String+1
2167. Minimum Time to Remove All Cars Containing Illegal Goods	Solve	Hard	Google	Dynamic Programming String
2193. Minimum Number of Moves to Make Palindrome	Solve	Hard	Amazon+2	Binary Indexed Tree Greedy+2
2209. Minimum White Tiles After Covering With Carpets	Solve	Hard	Google	Dynamic Programming Prefix Sum+1
2213. Longest Substring of One Repeating Character	Solve	Hard	Pickrr	Array Ordered Set+2
2223. Sum of Scores of Built Strings	Solve	Hard	Amazon	Binary Search Hash Function+4
2227. Encrypt and Decrypt Strings	Solve	Hard	Duolingo	Array Design+3
2246. Longest Path With Different Adjacent Characters	Solve	Hard	Hudson River Trading+1	Array Depth-First Search+4
2262. Total Appeal of A String	Solve	Hard	Amazon	Dynamic Programming Hash Table+1
2296. Design a Text Editor	Solve	Hard	Amazon+4	Design Doubly-Linked List+4
2301. Match Substring After Replacement	Solve	Hard	Discord	Array Hash Table+2
2306. Naming a Company	Solve	Hard	-	Array Bit Manipulation+3
2416. Sum of Prefix Scores of Strings	Solve	Hard	Facebook+1	Array Counting+2
2430. Maximum Deletions on a String	Solve	Hard	DE Shaw	Dynamic Programming Hash Function+3
2468. Split Message Based on Limit	Solve	Hard	Capital One+3	Binary Search String
2472. Maximum Number of Non-overlapping Palindrome Substrings	Solve	Hard	LinkedIn+2	Dynamic Programming Greedy+2
2478. Number of Beautiful Partitions	Solve	Hard	Google	Dynamic Programming String
2484. Count Palindromic Subsequences	Solve	Hard	Atlassian+2	Dynamic Programming String
2514. Count Anagrams	Solve	Hard	Mathworks	Combinatorics Counting+3
2565. Subsequence With the Minimum Score	Solve	Hard	DoorDash+1	Binary Search String+1
2573. Find the String with LCP	Solve	Hard	-	Array Dynamic Programming+4
2663. Lexicographically Smallest Beautiful String	Solve	Hard	Google	Greedy String
2719. Count of Integers	Solve	Hard	Amazon+1	Dynamic Programming Math+1
2781. Length of the Longest Valid Substring	Solve	Hard	Amazon	Array Hash Table+2
2801. Count Stepping Numbers in Range	Solve	Hard	Amazon	Dynamic Programming String
2842. Count K-Subsequences of a String With Maximum Beauty	Solve	Hard	Google	Combinatorics Greedy+3
2851. String Transformation	Solve	Hard	Atlassian+3	Dynamic Programming Math+2
2868. The Wording Game	Solve	Hard	-	Array Game Theory+4
2911. Minimum Changes to Make K Semi-palindromes	Solve	Hard	-	Dynamic Programming String+1
2949. Count Beautiful Substrings II	Solve	Hard	Amazon	Hash Table Math+3
2953. Count Complete Substrings	Solve	Hard	Meesho	Hash Table Sliding Window+1
2977. Minimum Cost to Convert String II	Solve	Hard	Atlassian	Array Dynamic Programming+4
2983. Palindrome Rearrangement Queries	Solve	Hard	-	Hash Table Prefix Sum+1
2999. Count the Number of Powerful Integers	Solve	Hard	-	Dynamic Programming Math+1
3003. Maximize the Number of Partitions After Operations	Solve	Hard	-	Bit Manipulation Bitmask+2
3008. Find Beautiful Indices in the Given Array II	Solve	Hard	-	Binary Search Hash Function+4
3031. Minimum Time to Revert Word to Initial State II	Solve	Hard	-	Hash Function Rolling Hash+2
3045. Count Prefix and Suffix Pairs II	Solve	Hard	-	Array Hash Function+4
3088. Make String Anti-palindrome	Solve	Hard	-	Counting Sort Greedy+2
3093. Longest Common Suffix Queries	Solve	Hard	-	Array String+1
3104. Find Longest Self-Contained Substring	Solve	Hard	-	Binary Search Hash Table+2
3213. Construct String with Minimum Cost	Solve	Hard	-	Array Dynamic Programming+2
3260. Find the Largest Palindrome Divisible by K	Solve	Hard	-	Dynamic Programming Greedy+3
3261. Count Substrings That Satisfy K-Constraint II	Solve	Hard	-	Array Binary Search+3
3279. Maximum Total Area Occupied by Pistons	Solve	Hard	-	Array Counting+4