Problems library (weekly updates)

Question
Smallest Even Multiple
Length of the Longest Alphabetical Continuous Substring
Reverse Odd Levels of Binary Tree
Counting Divisible Digits
Maximum Absolute Count of Integers
Finding Absolute Difference Between Element Sum and Digit Sum
Calculating Sum of Digits with Assigned Signs
Maximizing Score in an Incremental Game
Counting Elderly Passengers
Sum of Squares of Divisible Elements
Counting Employees Eligible for a Raise
Counting Beautiful Subarrays
Bank Account Balance after Purchase in Rupees
Typing Trouble with a Faulty Keyboard
Buying Chocolates with Money
Trim Trailing Zeros
Road Trip Fuel Strategy
Maximum Sum with Same Maximum Digit Pair
Greedy Distance Maximization
Sum of Elements with K Set Bits
Clearing the array
Collecting Number Series
Insert GCD Nodes in Linked List
Minimum Changes to Make Special String
Count Peaks in Mountain Array
Remove Adjacent Almost-Equal Characters
Maximum Polygon Perimeter
Smallest Missing Integer After Longest Sequential Prefix
Maximum Frequency Elements
Key Changes Count