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LeetCode - Restore IP Addresses

Question Definition

Given a string containing only digits, restore it by returning all possible valid IP address combinations.

LeetCode - Remove Nth Node From End of List

Question Definition

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

LeetCode - Permutations II

Question Definition

Given a collection of numbers that might contain duplicates, return all possible unique permutations.

LeetCode - Permutation in String

Question Definition

Given two strings s1 and s2, write a function to return true if s2 contains the permutation of s1. In other words, one of the first string’s permutations is the substring of the second string.

LeetCode - Partition List

Question Definition

Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x.

You should preserve the original relative order of the nodes in each of the two partitions.