Longest Nice Subarray

Number of Substrings Containing All Three Characters

Alternating Groups 2

Longest subarray with distinct elements

Shortest substring containing all characters in a set

Continuous Subarrays

Maximum Beauty of an Array After Applying Operation

Find Longest Special Substring That Occurs Thrice 2

Find Longest Special Substring That Occurs Thrice 1

Longest Substring with Same Letters after Replacement

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