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/ LeetCode
(共47篇)
leetcode 47. Permutations II[排列]
https://leetcode.com/problems/permutations-ii/ Given a collection of numbers that might contain duplicates, return all possible unique permutations. ...
leetcode
2019-07-14
0
850
leetcode 109. Convert Sorted List to Binary Search Tree【给定有序数组构建二叉树】
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. For this problem, a height-balanced bin...
LeetCode
BST
2019-03-11
0
555
leetcode 94. Binary Tree Inorder Traversal中序遍历
我特么要菜哭了 这玩意怎么能卡这么久 Example: Input: [1,null,2,3] 1 \ 2 / 3 Output: [1,3,2] Follow up: Recursive solution is trivial, could you...
leetcode
中序遍历
2018-12-17
0
652
leetcode 89. Gray Code【枚举格雷码】
https://leetcode.com/problems/gray-code/description/ The gray code is a binary numeral system where two successive values differ in only one bit. Gi...
leetcode
2018-11-07
0
750
leetcode 82. Remove Duplicates from Sorted List II【删除链表重复字符】
Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. Example 1: Input: 1...
leetcode
链表
2018-11-05
0
0
leetcode 80. Remove Duplicates from Sorted Array II【c++for循环】
Given a sorted array nums, remove the duplicates in-place such that duplicates appeared at most twice and return the new length. Do not allocate extr...
2018-11-03
0
607
leetcode 79. Word Search【dfs找方格中出现字符串】
https://leetcode.com/problems/word-search/description/ Given a 2D board and a word, find if the word exists in the grid. The word can be constructed...
leetcode
dfs
2018-11-02
0
657
leetcode 75. Sort Colors【荷兰旗问题】
基于快排的思想 回忆一下快排的思路: 把第一个位置的作为pivot,从右遍历直到发现有比pivot小的,交换;从左遍历,直到发现有比pivot大的,交换 注意这里交换的都是当前的low和high,直到low,high相遇,本轮停止 如果数字里面只有0,1,2那么显然只需要一次while就可以...
leetcode
快排
2018-11-01
0
668
leetcode 73. Set Matrix Zeroes【设置行列为0】
Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in-place. Example 1: Input: [ [1,1,1], [1,0,1], [1,1,1] ...
leetcode
2018-10-31
0
761
leetcode 71. Simplify Path【文件路径表达式】
Given an absolute path for a file (Unix-style), simplify it. For example,path = "/home/", => "/home"path = "/a/./b/../.....
2018-10-29
0
610
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