Leetcode 93: Restore IP Addresses
Question
Given a string containing only digits, restore it by returning all possible valid IP address combinations.
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Leetcode 92: Reverse Linked List II
Question Reverse a linked list from position m to n. Do it in one-pass. [Read More] -
Leetcode 91: Decode Ways
Question A message containing letters from A-Z is being encoded to numbers using the following mapping: [Read More] -
Leetcode 90: Subsets II
Question Given a collection of integers that might contain duplicates, nums, return all possible subsets (the power set). [Read More] -
Leetcode 89: Gray Code
Question The gray code is a binary numeral system where two successive values differ in only one bit. [Read More] -
Leetcode 88: Merge Sorted Array
Question Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. [Read More] -
Leetcode 86: Partition List
Question 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. [Read More] -
Leetcode 82: Remove Duplicates from Sorted List II
Question Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. [Read More] -
Leetcode 81: Search in Rotated Sorted Array II
Question Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand. [Read More] -
Leetcode 79: Word Search
Question Given a 2D board and a word, find if the word exists in the grid. [Read More] -
Leetcode 78: Subsets
Question Given a set of distinct integers, nums, return all possible subsets (the power set). [Read More] -
Leetcode 77: Combinations
Question Given two integers n and k, return all possible combinations of k numbers out of 1 … n. [Read More] -
Leetcode 75: Sort Colors
Question Given an array with n objects colored red, white or blue, sort them in-place so that objects of the same color are adjacent, with the colors in the order red, white and blue. [Read More] -
Leetcode 240: Search a 2D Matrix II
Question Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: [Read More] -
Leetcode 74: Search a 2D Matrix
Question Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: [Read More]