class Solution: def prefixesDivBy5(self, A: List[int]) -> List[bool]: ans,t = [],0 for a in A: t = (t * 2 + a)%5 ans.append(False if t else True) return ans…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 日期 题目地址:https://leetcode.com/problems/binary-prefix-divisible-by-5/ 题目描述 Given an array A of 0s and 1s, consider N_i: the i-th subarray from ```A[0]toA[i]`` interpreted as a bi…

题目如下: Given an array A of 0s and 1s, consider N_i: the i-th subarray from A[0] to A[i] interpreted as a binary number (from most-significant-bit to least-significant-bit.) Return a list of booleans answer, where answer[i]is true if and only if N_i is…

网址:https://leetcode.com/problems/binary-prefix-divisible-by-5/ 一次for循环遍历数组,在上次计算的基础上得到本次的结果! class Solution { public: vector<bool> prefixesDivBy5(vector<int>& A) { vector<bool> ans; ; ; ; i<A.size(); i++) { num = ; num += pre_num…

这是小川的第379次更新,第407篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第241题(顺位题号是1018).给定0和1的数组A,考虑N_i:从A[0]到A[i]的第i个子数组被解释为二进制数(从最高有效位到最低有效位). 返回布尔值answer列表,当且仅当N_i可被5整除时,answer[i]为true. 例如: 输入:[0,1,1] 输出:[true,false,false] 说明:二进制输入数字为0,01,011,转为十进制数,分别为0,1和3.只有第一…

Given an array A of 0s and 1s, consider N_i: the i-th subarray from A[0] to A[i] interpreted as a binary number (from most-significant-bit to least-significant-bit.) Return a list of booleans answer, where answer[i] is true if and only if N_i is divi…

Given an array A of 0s and 1s, consider N_i: the i-th subarray from A[0] to A[i] interpreted as a binary number (from most-significant-bit to least-significant-bit.) Return a list of booleans answer, where answer[i] is true if and only if N_i is divi…

// 我的代码 package Leetcode; /** * 199. Binary Tree Right Side View * address: https://leetcode.com/problems/binary-tree-right-side-view/ * Given a binary tree, imagine yourself standing on the right side of it, * return the values of the nodes you can…

LeetCode:Construct Binary Tree from Inorder and Postorder Traversal Given inorder and postorder traversal of a tree, construct the binary tree. Note:You may assume that duplicates do not exist in the tree.                                            …

LeetCode:Unique Binary Search Trees Given n, how many structurally unique BST's (binary search trees) that store values 1...n? For example,Given n = 3, there are a total of 5 unique BST's. 1 3 3 2 1 \ / / / \ \ 3 2 1 1 3 2 / / \ \ 2 1 2 3 分析:依次把每个节点作…