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
1903. Largest Odd Number in String	Solve	Easy	Adobe+1	Greedy Math+1
1904. The Number of Full Rounds You Have Played	Solve	Medium	Wayfair	Math String
1910. Remove All Occurrences of a Substring	Solve	Medium	Amazon+3	Simulation Stack+1
1915. Number of Wonderful Substrings	Solve	Medium	DE Shaw+1	Bit Manipulation Hash Table+2
1927. Sum Game	Solve	Medium	Bytedance+1	Game Theory Greedy+2
1930. Unique Length-3 Palindromic Subsequences	Solve	Medium	Adobe+1	Bit Manipulation Hash Table+2
1933. Check if String Is Decomposable Into Value-Equal Substrings	Solve	Easy	-	String
1935. Maximum Number of Words You Can Type	Solve	Easy	Quora	Hash Table String
1941. Check if All Characters Have Equal Number of Occurrences	Solve	Easy	Bolt	Counting Hash Table+1
1945. Sum of Digits of String After Convert	Solve	Easy	Microsoft	Simulation String
1946. Largest Number After Mutating Substring	Solve	Medium	Infosys	Array Greedy+1
1948. Delete Duplicate Folders in System	Solve	Hard	Booking.com+1	Array Hash Function+3
1957. Delete Characters to Make Fancy String	Solve	Easy	Wayfair	String
1960. Maximum Product of the Length of Two Palindromic Substrings	Solve	Hard	Codenation	Hash Function Rolling Hash+1
1961. Check If String Is a Prefix of Array	Solve	Easy	Uber	Array String+1
1963. Minimum Number of Swaps to Make the String Balanced	Solve	Medium	Apple+3	Greedy Stack+2
1967. Number of Strings That Appear as Substrings in Word	Solve	Easy	Uber	Array String
1974. Minimum Time to Type Word Using Special Typewriter	Solve	Easy	TikTok	Greedy String
1977. Number of Ways to Separate Numbers	Solve	Hard	Media.Net+1	Dynamic Programming String+1
1980. Find Unique Binary String	Solve	Medium	Amazon	Array Backtracking+2
1985. Find the Kth Largest Integer in the Array	Solve	Medium	Facebook	Array Divide and Conquer+4
1987. Number of Unique Good Subsequences	Solve	Hard	Google+1	Dynamic Programming String
2000. Reverse Prefix of Word	Solve	Easy	Optum	Stack String+1
2002. Maximum Product of the Length of Two Palindromic Subsequences	Solve	Medium	Ascend+2	Backtracking Bit Manipulation+3
2011. Final Value of Variable After Performing Operations	Solve	Easy	Apple+1	Array Simulation+1
2014. Longest Subsequence Repeated k Times	Solve	Hard	Facebook	Backtracking Counting+3
2019. The Score of Students Solving Math Expression	Solve	Hard	Flipkart	Array Dynamic Programming+4
2023. Number of Pairs of Strings With Concatenation Equal to Target	Solve	Medium	Facebook	Array Counting+2
2024. Maximize the Confusion of an Exam	Solve	Medium	Amazon+2	Binary Search Prefix Sum+2
2027. Minimum Moves to Convert String	Solve	Easy	Jeavio	Greedy String
2030. Smallest K-Length Subsequence With Occurrences of a Letter	Solve	Hard	Deutsche Bank	Greedy Monotonic Stack+2
2038. Remove Colored Pieces if Both Neighbors are the Same Color	Solve	Medium	JPMorgan+2	Game Theory Greedy+2
2042. Check if Numbers Are Ascending in a Sentence	Solve	Easy	Apple	String
2047. Number of Valid Words in a Sentence	Solve	Easy	Amazon	String
2053. Kth Distinct String in an Array	Solve	Easy	Amazon	Array Counting+2
2055. Plates Between Candles	Solve	Medium	Amazon+1	Array Binary Search+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
2062. Count Vowel Substrings of a String	Solve	Easy	Commvault	Hash Table String
2063. Vowels of All Substrings	Solve	Medium	ServiceNow	Combinatorics Dynamic Programming+2
2067. Number of Equal Count Substrings	Solve	Medium	Cisco	Counting Prefix Sum+1
2068. Check Whether Two Strings are Almost Equivalent	Solve	Easy	Salesforce	Counting Hash Table+1
2075. Decode the Slanted Ciphertext	Solve	Medium	Amazon	Simulation String
2083. Substrings That Begin and End With the Same Letter	Solve	Medium	-	Counting Hash Table+3
2085. Count Common Words With One Occurrence	Solve	Easy	Jane Street	Array Counting+2
2086. Minimum Number of Food Buckets to Feed the Hamsters	Solve	Medium	Grab+2	Dynamic Programming Greedy+1
2096. Step-By-Step Directions From a Binary Tree Node to Another	Solve	Medium	Amazon+5	Binary Tree Depth-First Search+2
2103. Rings and Rods	Solve	Easy	Google	Hash Table String
2108. Find First Palindromic String in the Array	Solve	Easy	Amazon+1	Array String+1
2109. Adding Spaces to a String	Solve	Medium	Amazon	Array Simulation+2