bernieloveslife

2018年10月24日

摘要： X is a good number if after rotating each digit individually by 180 degrees, we get a valid number that is different from X. Each digit must be rotate 阅读全文

posted @ 2018-10-24 22:03 bernieloveslife 阅读(141) 评论(0) 推荐(0)

783. Minimum Distance Between BST Nodes

摘要： Given a Binary Search Tree (BST) with the root node root, return the minimum difference between the values of any two different nodes in the tree. Exa 阅读全文

posted @ 2018-10-24 22:02 bernieloveslife 阅读(120) 评论(0) 推荐(0)

538. Convert BST to Greater Tree

摘要： Given a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original BST is changed to the original key plus sum of all 阅读全文

posted @ 2018-10-24 22:02 bernieloveslife 阅读(135) 评论(0) 推荐(0)

2018年10月23日

784. Letter Case Permutation

摘要： Given a string S, we can transform every letter individually to be lowercase or uppercase to create another string. Return a list of all possible stri 阅读全文

posted @ 2018-10-23 11:04 bernieloveslife 阅读(126) 评论(0) 推荐(0)

696. Count Binary Substrings

摘要： Give a string s, count the number of non empty (contiguous) substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in th 阅读全文

posted @ 2018-10-23 11:04 bernieloveslife 阅读(99) 评论(0) 推荐(0)

520. Detect Capital

摘要： Given a word, you need to judge whether the usage of capitals in it is right or not. We define the usage of capitals in a word to be right when one of 阅读全文

posted @ 2018-10-23 11:03 bernieloveslife 阅读(100) 评论(0) 推荐(0)

197. Rising Temperature

摘要： Given a Weather table, write a SQL query to find all dates' Ids with higher temperature compared to its previous (yesterday's) dates. + + + + | Id(INT 阅读全文

posted @ 2018-10-23 11:03 bernieloveslife 阅读(99) 评论(0) 推荐(0)

182. Duplicate Emails

摘要： Write a SQL query to find all duplicate emails in a table named Person. + + + | Id | Email | + + + | 1 | a@b.com | | 2 | c@d.com | | 3 | a@b.com | + + 阅读全文

posted @ 2018-10-23 11:03 bernieloveslife 阅读(130) 评论(0) 推荐(0)

2018年10月22日

338. Counting Bits

摘要： Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and r 阅读全文

posted @ 2018-10-22 12:06 bernieloveslife 阅读(92) 评论(0) 推荐(0)

876. Middle of the Linked List

摘要： Given a non empty, singly linked list with head node head, return a middle node of linked list. If there are two middle nodes, return the second middl 阅读全文

posted @ 2018-10-22 12:06 bernieloveslife 阅读(91) 评论(0) 推荐(0)

公告