給定一個可包含重復數字的序列，返回所有不重復的全排列。 示例: 輸入: [1,1,2]輸出:[[1,1,2],[1,2,1],[2,1,1]] 解題思路 在全排列的基礎上去重...
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[LeetCode][M] 47. 全排列 II
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[LeetCode][M] 46. 全排列
給定一個沒有重復數字的序列，返回其所有可能的全排列。 示例: 輸入: [1,2,3]輸出:[[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[...
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[LeetCode][M] 6. Z 字形變換
將一個給定字符串根據給定的行數，以從上往下、從左到右進行 Z 字形排列。 比如輸入字符串為 "LEETCODEISHIRING" 行數為 3 時，排列如下： L C ...
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[LeetCode][M] 5. 最長回文子串
給定一個字符串 s，找到 s 中最長的回文子串。你可以假設 s 的最大長度為 1000。 示例 1： 輸入: "babad"輸出: "bab"注意: "aba" 也是一個有效...
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[LeetCode][M] 3. 無重復字符的最長子串
給定一個字符串，請你找出其中不含有重復字符的 最長子串 的長度。 示例 1: 輸入: "abcabcbb"輸出: 3解釋: 因為無重復字符的最長子串是 "abc"，所以其長度...
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[LeetCode][M] 2. 兩數相加
給出兩個 非空 的鏈表用來表示兩個非負的整數。其中，它們各自的位數是按照 逆序 的方式存儲的，并且它們的每個節(jié)點只能存儲 一位 數字。 如果，我們將這兩個數相加起來，則會返回...
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[LeetCode][E] 1.兩數之和
給定一個整數數組 nums 和一個目標值 target，請你在該數組中找出和為目標值的那 兩個 整數，并返回他們的數組下標。 你可以假設每種輸入只會對應一個答案。但是，你不能...
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[LeetCode] Next Greater Node In Linked List
We are given a linked list with head as the first node. Let's number the nodes in the ...
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[LeetCode] Binary Prefix Divisible By 5
Given an array A of 0s and 1s, consider N_i: the i-th subarray from A[0] to A[i] interp...
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[LeetCode] Smallest Integer Divisible by K
Given a positive integer K, you need find the smallest positive integer N such that N i...
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[LeetCode] Best Sightseeing Pair
Given an array A of positive integers, A[i] represents the value of the i-th sightseein...
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[LeetCode] Convert to Base -2
Given a number N, return a string consisting of "0"s and "1"s that represents its value...
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[LeetCode] Partition Array Into Three Parts With Equal Sum
Given an array A of integers, return true if and only if we can partition the array int...
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[LeetCode] Capacity To Ship Packages Within D Days
A conveyor belt has packages that must be shipped from one port to another within D day...
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[LeetCode] Pairs of Songs With Total Durations Divisible by 60
In a list of songs, the i-th song has a duration of time[i] seconds. Return the number ...
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[LeetCode] Complement of Base 10 Integer
Every non-negative integer N has a binary representation. For example, 5 can be repres...
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[LeetCode] Construct Binary Search Tree from Preorder TraversalReturn the root node of a binary search tree that matches the given preorder traversal....
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[LeetCode] Minimum Domino Rotations For Equal Row
In a row of dominoes, A[i] and B[i] represent the top and bottom halves of the i-th dom...
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[LeetCode] Clumsy Factorial
Normally, the factorial of a positive integer n is the product of all positive integers...