原创 301. Remove Invalid Parentheses 去掉不合理的括號
Remove the minimum number of invalid parentheses in order to make the input string valid. Return all possible results
2020-06-27 16:59:50
原创 327. Count of Range Sum 滿足某個範圍數內的區間個數
Given an integer array nums, return the number of range sums that lie in [lower, upper] inclusive. Range sum S(i, j)
2020-06-27 16:05:28
原创 30. Substring with Concatenation of All Words 找出包含所有字典中詞的開頭
You are given a string, s, and a list of words, words, that are all of the same length. Find all starting indices of s
2020-06-27 16:05:27
原创 239. Sliding Window Maximum 固定的滑動窗口裏找最大值
Given an array nums, there is a sliding window of size k which is moving from the very left of the array to the very
2020-06-27 16:05:27
原创 330. Patching Array 給數組添上元素，使得滿足存在所有1~n元素
Given a sorted positive integer array nums and an integer n, add/patch elements to the array such that any number in
2020-06-27 16:05:27
原创 99. Recover Binary Search Tree 將二叉查找樹中亂序的兩個元素值調整
Two elements of a binary search tree (BST) are swapped by mistake. Recover the tree without changing its structure. N
2020-02-21 15:11:14
原创 87. Scramble String
Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively. B
2020-02-21 15:11:14
原创 41. First Missing Positive 第一個不在的正整數
Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3, and [3
2020-02-21 15:11:14
原创 Expression Add Operators
Given a string that contains only digits 0-9 and a target value, return all possibilities to add binary operators (n
2020-02-21 15:11:03
原创 164. Maximum Gap
Given an unsorted array, find the maximum difference between the successive elements in its sorted form. Try to sol
2020-02-21 15:11:03
原创 363. Max Sum of Rectangle No Larger Than K 最大累加子矩陣的和且不超過K
Given a non-empty 2D matrix matrix and an integer k, find the max sum of a rectangle in the matrix such that its sum i
2020-02-21 15:11:03
原创 51. N-Queens
The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other
2020-02-21 15:11:03
原创 2017 網易有道內推
第三題： 一個隊列，先pop一個頭結點放在隊尾，再pop一個頭結點輸出其值並丟棄。最後輸出的序列爲1，2，3，。。。n 問原始隊列元素排列是什麼 輸入：n //n個數 輸出：一個串 // // main.cpp // y
2020-02-21 15:11:03
原创 72. Edit Distance 最小編輯距離
Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each operation
2020-02-21 15:11:03
原创 23. Merge k Sorted Lists 合併k個鏈表
Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. 1.我的思路 超時了
2020-02-21 15:11:02