Word Search II LeetCode Solution
Given an m x n board of characters and a list of strings words, return all words on the board.
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Leetcode SolutionMicrosoft
Intersection of Two Linked Lists LeetCode Solution
Given the heads of two singly linked-lists headA and headB, return the node at which the two lists intersect. If the two linked lists have no intersection at all, return null.
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Leetcode SolutionMerge k Sorted Lists LeetCode Solution
You are given an array of k linked-lists lists, each linked-list is sorted in ascending order. Merge all the linked-lists into one sorted linked-list and return it.
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Leetcode SolutionValid Parentheses LeetCode Solution
Given a string s containing just the characters ‘(‘, ‘)’, ‘{‘, ‘}’, ‘[‘ and ‘]’, determine if the input string is valid.
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Leetcode SolutionDelete Node in a Linked List LeetCode Solution
There is a singly-linked list head and we want to delete a node node in it. Delete the given node
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Leetcode SolutionReverse Linked List LeetCode Solution
Given the head of a singly linked list, reverse the list, and return the reversed list.
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Leetcode SolutionMerge Two Sorted Lists LeetCode Solution
You are given the heads of two sorted linked lists list1 and list2. Merge the two lists in a one sorted list. The list should be made by splicing together the nodes of the first two lists. Return the head of the merged linked list.
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Leetcode SolutionReverse Nodes in k-Group LeetCode Solution
Given the head of a linked list, reverse the nodes of the list k at a time, and return the modified list.
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Leetcode SolutionSearch in Rotated Sorted Array LeetCode Solution
Given the array nums after the possible rotation and an integer target, return the index of target if it is in nums, or -1 if it is not in nums.
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Leetcode SolutionPermutations LeetCode Solution
Given an array nums of distinct integers, return all the possible permutations. You can return the answer in any order.
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Leetcode SolutionSwap Nodes in Pairs LeetCode Solution
Given a linked list, swap every two adjacent nodes and return its head. You must solve the problem without modifying the values in the list’s nodes.
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Leetcode SolutionPermutations II LeetCode Solution
Given a collection of numbers, nums, that might contain duplicates, return all possible unique permutations in any order.
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Leetcode SolutionRotate Image LeetCode Solution
You are given an n x n 2D matrix representing an image, rotate the image by 90 degrees (clockwise).
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