07 2020 档案

[LeetCode 1284] Minimum Number of Flips to Convert Binary Matrix to Zero Matrix
摘要：Given a m x n binary matrix mat. In one step, you can choose one cell and flip it and all the four neighbours of it if they exist (Flip is changing 1 阅读全文
posted @ 2020-07-28 10:17 Review->Improve 阅读(1063) 评论(0) 推荐(0)
[LeetCode 1526] Minimum Number of Increments on Subarrays to Form a Target Array
摘要：Given an array of positive integers target and an array initial of same size with all zeros. Return the minimum number of operations to form a target  阅读全文
posted @ 2020-07-27 12:26 Review->Improve 阅读(898) 评论(0) 推荐(1)
[LeetCode 1530] Number of Good Leaf Nodes Pairs
摘要：Given the root of a binary tree and an integer distance. A pair of two different leaf nodes of a binary tree is said to be good if the length of the s 阅读全文
posted @ 2020-07-27 11:46 Review->Improve 阅读(1083) 评论(0) 推荐(0)
[LeetCode 829] Consecutive Numbers Sum
摘要：Given a positive integer N, how many ways can we write it as a sum of consecutive positive integers? Example 1: Input: 5 Output: 2 Explanation: 5 = 5 阅读全文
posted @ 2020-07-25 07:56 Review->Improve 阅读(407) 评论(0) 推荐(0)
[LeetCode 68] Text Justification
摘要：Given an array of words and a width maxWidth, format the text such that each line has exactly maxWidth characters and is fully (left and right) justif 阅读全文
posted @ 2020-07-25 00:00 Review->Improve 阅读(795) 评论(0) 推荐(0)
[LeetCode 1520] Maximum Number of Non-Overlapping Substrings
摘要：Given a string s of lowercase letters, you need to find the maximum number of non-empty substrings of s that meet the following conditions: The substr 阅读全文
posted @ 2020-07-22 07:09 Review->Improve 阅读(1040) 评论(0) 推荐(0)
[LeetCode 625] Minimum Factorization
摘要：Given a positive integer a, find the smallest positive integer b whose multiplication of each digit equals to a. If there is no answer or the answer i 阅读全文
posted @ 2020-07-10 01:34 Review->Improve 阅读(444) 评论(0) 推荐(0)