Find smallest letter greater than target in a sorted array of letters

Find Common Elements in Two Sorted Linked Lists

Find last modular node in linked list for given k

Check if the length of a linked list is even or odd

Array-based Trie Implementation

Count Beautiful Numbers

Count Cells in Overlapping Horizontal and Vertical Substrings

Count Partitions with Even Sum Difference

Count Special Subsequences

Count Substrings Divisible By Last Digit