Description Given a singly linked list, determine if it is a palindrome. Example 1: Inp...
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234. Palindrome Linked List
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20. Valid Parentheses
Description Given a string containing just the characters '(', ')', '{', '}', '[' and '...
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282. Expression Add Operators
Description Given a string that contains only digits 0-9 and a target value, return all...
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773. Sliding Puzzle
Description On a 2x3 board, there are 5 tiles represented by the integers 1 through 5, ...
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802. Find Eventual Safe StatesDescription In a directed graph, we start at some node and every turn, walk along a dir...
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527. Word Abbreviation
https://leetcode.com/problems/word-abbreviation/description/Two words are only eligible...
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805. Split Array With Same Average
Description In a given integer array A, we must move every element of A to either list ...
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765. Couples Holding Hands
Description N couples sit in 2N seats arranged in a row and want to hold hands. We want...
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753. Cracking the Safe
Description https://leetcode.com/problems/cracking-the-safe/description/https://leetcod...
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750. Number Of Corner Rectangles
Description Given a grid where each entry is only 0 or 1, find the number of corner rec...
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731. My Calendar II
https://leetcode.com/problems/my-calendar-ii/description/https://leetcode.com/problems/...
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729. My Calendar I
https://leetcode.com/problems/my-calendar-i/description/https://leetcode.com/problems/m...
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560. Subarray Sum Equals K
https://leetcode.com/problems/subarray-sum-equals-k/description/https://leetcode.com/pr...
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540. Single Element in a Sorted Array
https://leetcode.com/problems/single-element-in-a-sorted-array/description/https://leet...
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465. Optimal Account Balancing
https://leetcode.com/problems/optimal-account-balancing/description/NP Complete問題, O(n!...
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486. Predict the Winner
Description Given an array of scores that are non-negative integers. Player 1 picks one...
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340. Longest Substring with At Most K Distinct Characters
Description Given a string, find the length of the longest substring T that contains at...
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308. Range Sum Query 2D - Mutable
Description Given a 2D matrix matrix, find the sum of the elements inside the rectangle...
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248. Strobogrammatic Number III
Description A strobogrammatic number is a number that looks the same when rotated 180 d...
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815. Bus Routes
Description We have a list of bus routes. Each routes[i] is a bus route that the i-th b...