Given two integers representing the numerator and denominator of a fraction, return the fraction in string format.

Given an integer n, return the number of trailing zeroes in n!.

Given a positive integer, return its corresponding column title as appear in an Excel sheet.

Related to question Excel Sheet Column Title

Divide two integers without using multiplication, division and mod operator.

Given a list, rotate the list to the right by k places, where k is non-negative.

Reverse a linked list from position m to n. Do it in-place and in one-pass.

Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list.

Given a sorted linked list, delete all duplicates such that each element appear only once.

Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists.