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String DSA Problems

String is an important concept in data structures and algorithms. Practice these problems to master String and prepare for technical interviews.

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Difficulty: Medium
3297. Count Substrings That Can Be Rearranged to Contain a String I
MediumHash Table +241.6323%
SolveVideo
LeetCode
3302. Find the Lexicographically Smallest Valid Sequence
MediumDynamic Programming +319.451%
SolveVideo
LeetCode
3305. Count of Substrings Containing Every Vowel and K Consonants I
MediumHash Table +240.492%
SolveVideo
LeetCode
3306. Count of Substrings Containing Every Vowel and K Consonants II
MediumHash Table +221.4344%
SolveVideo
LeetCode
3316. Find Maximum Removals From Source String
MediumArray +437.5513%
SolveVideo
LeetCode
3324. Find the Sequence of Strings Appeared on the Screen
MediumSimulation +180.1352%
SolveVideo
LeetCode
3325. Count Substrings With K-Frequency Characters I
MediumHash Table +255.0183%
SolveVideo
LeetCode
3331. Find Subtree Sizes After Changes
MediumArray +458.4554%
SolveVideo
LeetCode
3335. Total Characters in String After Transformations I
MediumCounting +426.1529%
SolveVideo
LeetCode
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