08 2020 档案

Binary Lifting Algorithm
摘要：I have run into 2 different problems that can be solved using binary lifting. Then there is second thread's tree basics youtube video that talks about 阅读全文
posted @ 2020-08-25 11:53 Review->Improve 阅读(257) 评论(0) 推荐(0)
[LeetCode 1562] 1562. Find Latest Group of Size M
摘要：Given an array arr that represents a permutation of numbers from 1 to n. You have a binary string of size n that initially has all its bits set to zer 阅读全文
posted @ 2020-08-25 01:47 Review->Improve 阅读(511) 评论(0) 推荐(0)
[LeetCode 1560] Most Visited Sector in a Circular Track
摘要：Given an integer n and an integer array rounds. We have a circular track which consists of n sectors labeled from 1 to n. A marathon will be held on t 阅读全文
posted @ 2020-08-24 23:47 Review->Improve 阅读(870) 评论(0) 推荐(0)
[LeetCode 991] Broken Calculator
摘要：On a broken calculator that has a number showing on its display, we can perform two operations: Double: Multiply the number on the display by 2, or; D 阅读全文
posted @ 2020-08-23 04:57 Review->Improve 阅读(270) 评论(0) 推荐(0)
[LeetCode 1558] Minimum Numbers of Function Calls to Make Target Array
摘要：Your task is to form an integer array nums from an initial array of zeros arr that is the same size as nums. Return the minimum number of function cal 阅读全文
posted @ 2020-08-23 04:05 Review->Improve 阅读(414) 评论(0) 推荐(0)
[LeetCode 321] Create Maximum Number
摘要：Given two arrays of length m and n with digits 0-9 representing two numbers. Create the maximum number of length k <= m + n from digits of the two. Th 阅读全文
posted @ 2020-08-21 11:37 Review->Improve 阅读(308) 评论(0) 推荐(0)
[LeetCode 1552] Magnetic Force Between Two Balls
摘要：In universe Earth C-137, Rick discovered a special form of magnetic force between two balls if they are put in his new invented basket. Rick has n emp 阅读全文
posted @ 2020-08-17 07:08 Review->Improve 阅读(874) 评论(0) 推荐(0)
[LeetCode 660] Remove 9
摘要：Start from integer 1, remove any integer that contains 9 such as 9, 19, 29... So now, you will have a new integer sequence: 1, 2, 3, 4, 5, 6, 7, 8, 10 阅读全文
posted @ 2020-08-16 06:52 Review->Improve 阅读(187) 评论(0) 推荐(0)
[LeetCode 1542] Find Longest Awesome Substring
摘要：Given a string s. An awesome substring is a non-empty substring of s such that we can make any number of swaps in order to make it palindrome. Return 阅读全文
posted @ 2020-08-15 01:52 Review->Improve 阅读(402) 评论(0) 推荐(0)
[LeetCode 879] Profitable Schemes
摘要：There are G people in a gang, and a list of various crimes they could commit. The i-th crime generates a profit[i] and requires group[i] gang members 阅读全文
posted @ 2020-08-12 10:32 Review->Improve 阅读(368) 评论(0) 推荐(0)
[LeetCode 233] Number of Digit One
摘要：Given an integer n, count the total number of digit 1 appearing in all non-negative integers less than or equal to n. Example: Input: 13 Output: 6 Exp 阅读全文
posted @ 2020-08-11 00:21 Review->Improve 阅读(242) 评论(0) 推荐(0)