Given a string containing just the characters '(', ')', '{', '}', '[' an...

Given a linked list, remove the nth node from the end of list and return...

Given an array S of n integers, are there elements a, b, c, and d in S s...

Given a digit string, return all possible letter combinations that the n...

Given an array S of n integers, find three integers in S such that the s...

Given an array S of n integers, are there elements a, b, c in S such tha...

Write a function to find the longest common prefix string amongst an arr...

Given an integer, convert it to a roman numeral.Input is guaranteed to b...

Given an integer, convert it to a roman numeral.Input is guaranteed to b...