随笔分类 -  LeetCode

617. Merge Two Binary Trees
摘要：Given two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are n 阅读全文
posted @ 2019-03-28 16:17 czhao4 阅读(85) 评论(0) 推荐(0) 编辑
1002. Find Common Characters
摘要：Given an array A of strings made only from lowercase letters, return a list of all characters that show up in all strings within the list (including d 阅读全文
posted @ 2019-03-08 11:18 czhao4 阅读(117) 评论(0) 推荐(0) 编辑
942. DI String Match
摘要：Given a string S that only contains "I" (increase) or "D" (decrease), let N = S.length. Return any permutation A of [0, 1, ..., N] such that for all i 阅读全文
posted @ 2019-03-07 09:08 czhao4 阅读(79) 评论(0) 推荐(0) 编辑
905. Sort Array By Parity
摘要：Given an array A of non-negative integers, return an array consisting of all the even elements of A, followed by all the odd elements of A. You may re 阅读全文
posted @ 2019-03-06 09:22 czhao4 阅读(97) 评论(0) 推荐(0) 编辑
977. Squares of a Sorted Array
摘要：Given an array of integers A sorted in non-decreasing order, return an array of the squares of each number, also in sorted non-decreasing order. Examp 阅读全文
posted @ 2019-03-05 09:16 czhao4 阅读(87) 评论(0) 推荐(0) 编辑
961. N-Repeated Element in Size 2N Array
摘要：In a array A of size 2N, there are N+1 unique elements, and exactly one of these elements is repeated N times. Return the element repeated N times. Ex 阅读全文
posted @ 2019-03-04 09:03 czhao4 阅读(80) 评论(0) 推荐(0) 编辑
929. Unique Email Addresses
摘要：Every email consists of a local name and a domain name, separated by the @ sign. For example, in alice@leetcode.com, alice is the local name, and leet 阅读全文
posted @ 2019-02-28 17:12 czhao4 阅读(108) 评论(0) 推荐(0) 编辑