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
2564. Substring XOR Queries	Solve	Medium	Trilogy	Array Bit Manipulation+2
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
2575. Find the Divisibility Array of a String	Solve	Medium	Amazon	Array Math+1
2586. Count the Number of Vowel Strings in Range	Solve	Easy	PayPal	Array Counting+1
2590. Design a Todo List	Solve	Medium	-	Array Design+3
2606. Find the Substring With Maximum Cost	Solve	Medium	Amazon	Array Dynamic Programming+2
2609. Find the Longest Balanced Substring of a Binary String	Solve	Easy	-	String
2645. Minimum Additions to Make Valid String	Solve	Medium	Google	Dynamic Programming Greedy+2
2663. Lexicographically Smallest Beautiful String	Solve	Hard	Google	Greedy String
2678. Number of Senior Citizens	Solve	Easy	-	Array String
2696. Minimum String Length After Removing Substrings	Solve	Easy	Yelp	Simulation Stack+1
2697. Lexicographically Smallest Palindrome	Solve	Easy	-	Greedy String+1
2707. Extra Characters in a String	Solve	Medium	Amazon+2	Array Dynamic Programming+3
2710. Remove Trailing Zeros From a String	Solve	Easy	-	String
2712. Minimum Cost to Make All Characters Equal	Solve	Medium	-	Dynamic Programming Greedy+1
2716. Minimize String Length	Solve	Easy	-	Hash Table String
2719. Count of Integers	Solve	Hard	Amazon+1	Dynamic Programming Math+1
2730. Find the Longest Semi-Repetitive Substring	Solve	Medium	-	Sliding Window String
2734. Lexicographically Smallest String After Substring Operation	Solve	Medium	-	Greedy String
2743. Count Substrings Without Repeating Character	Solve	Medium	-	Hash Table Sliding Window+1
2744. Find Maximum Number of String Pairs	Solve	Easy	-	Array Hash Table+2
2746. Decremental String Concatenation	Solve	Medium	-	Array Dynamic Programming+1
2767. Partition String Into Minimum Beautiful Substrings	Solve	Medium	-	Backtracking Dynamic Programming+2
2781. Length of the Longest Valid Substring	Solve	Hard	Amazon	Array Hash Table+2
2785. Sort Vowels in a String	Solve	Medium	Google+1	Sorting String
2788. Split Strings by Separator	Solve	Easy	-	Array String
2800. Shortest String That Contains Three Strings	Solve	Medium	DE Shaw	Enumeration Greedy+1
2801. Count Stepping Numbers in Range	Solve	Hard	Amazon	Dynamic Programming String
2802. Find The K-th Lucky Number	Solve	Medium	-	Bit Manipulation Math+1
2810. Faulty Keyboard	Solve	Easy	Samsung	Simulation String
2825. Make String a Subsequence Using Cyclic Increments	Solve	Medium	Amazon	String Two Pointers
2828. Check if a String Is an Acronym of Words	Solve	Easy	Uber	Array String
2833. Furthest Point From Origin	Solve	Easy	Amazon+1	Counting String
2839. Check if Strings Can be Made Equal With Operations I	Solve	Easy	Citrix	String
2840. Check if Strings Can be Made Equal With Operations II	Solve	Medium	Citrix	Hash Table Sorting+1
2842. Count K-Subsequences of a String With Maximum Beauty	Solve	Hard	Google	Combinatorics Greedy+3
2844. Minimum Operations to Make a Special Number	Solve	Medium	-	Enumeration Greedy+2
2851. String Transformation	Solve	Hard	Atlassian+3	Dynamic Programming Math+2
2864. Maximum Odd Binary Number	Solve	Easy	-	Greedy Math+1
2868. The Wording Game	Solve	Hard	-	Array Game Theory+4
2896. Apply Operations to Make Two Strings Equal	Solve	Medium	Zeta	Dynamic Programming String
2900. Longest Unequal Adjacent Groups Subsequence I	Solve	Easy	Fourkites	Array Dynamic Programming+2
2901. Longest Unequal Adjacent Groups Subsequence II	Solve	Medium	Fourkites	Array Dynamic Programming+1
2904. Shortest and Lexicographically Smallest Beautiful String	Solve	Medium	Amazon+1	Sliding Window String
2911. Minimum Changes to Make K Semi-palindromes	Solve	Hard	-	Dynamic Programming String+1
2914. Minimum Number of Changes to Make Binary String Beautiful	Solve	Medium	-	String
2933. High-Access Employees	Solve	Medium	Atlassian	Array Hash Table+2
2937. Make Three Strings Equal	Solve	Easy	Amazon	String
2938. Separate Black and White Balls	Solve	Medium	1Kosmos	Greedy String+1