Problems library (weekly updates)

Question
Remove All Occurrences of a Substring
Maximum Alternating Subsequence Sum
Maximum Product Difference Between Two Pairs
Number of Wonderful Substrings
Build Array from Permutation
Count Good Numbers
Count Square Sum Triples
Concatenation of Array
Unique Length-3 Palindromic Subsequences
Add Minimum Number of Rungs
Check if All Characters Have Equal Number of Occurrences
Number of Visible People in a Queue
Sum of Digits of String After Convert
Three Divisors
Maximum Number of Weeks for Which You Can Work
Minimum Garden Perimeter to Collect Enough Apples
Delete Characters to Make Fancy String
Minimum Total Space Wasted With K Resizing Operations
Maximum Product of the Length of Two Palindromic Substrings
Remove Stones to Minimize the Total
Minimum Non-Zero Product of the Array Elements
Minimum Time to Type Word Using Special Typewriter
Find Greatest Common Divisor of Array
Minimum Difference Between Highest and Lowest of K Scores
Find the Kth Largest Integer in the Array
Minimum Number of Work Sessions to Finish the Tasks
Number of Unique Good Subsequences
Find the Middle Index in Array
The Number of Good Subsets
Count Special Quadruplets