[九度OJ]题目1040:Prime Number 解题报告 标签(空格分隔): 九度OJ 原题地址:http://ac.jobdu.com/problem.php?pid=1040 题目描述: Output the k-th prime number. 输入: k≤10000 输出: The k-th prime number. 样例输入: 3 7 样例输出: 5 17 Ways 首先用C++做了一遍,刚开始没有AC的原因是判断素数的函数写的不对,没有处理2这个情况.后来发现每次停止循环的时候…

[LeetCode]Largest Number 解题报告 标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/largest-number/#/description 题目描述: Given a list of non negative integers, arrange them such that they form the largest number. For example, given [3, 30, 34, 5, 9], t…

[LeetCode]306. Additive Number 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.me/ 题目地址:https://leetcode.com/problems/additive-number/description/ 题目描述: Additive number is a string whose digits can form additive se…

namenum解题报告 —— icedream61 博客园(转载请注明出处)------------------------------------------------------------------------------------------------------------------------------------------------[题目] 你有一个手机,键盘如下所示: 2: A,B,C 5: J,K,L 8: T,U,V 3: D,E,F 6: M,N,O 9:…

C - Minimum Inversion Number Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Description The inversion number of a given number sequence a1, a2, ..., an is the number of pairs (ai, aj) that satisfy i < j and ai > aj.…

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 除去2,3,5因子 日期 [LeetCode] 题目地址:https://leetcode.com/problems/ugly-number/ Total Accepted: 22335 Total Submissions: 67449 Difficulty: Easy 题目描述 Write a program to check whether a…

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 递归 迭代 日期 [LeetCode] 题目地址:https://leetcode.com/problems/happy-number/ Total Accepted: 36352 Total Submissions: 109782 Difficulty: Easy 题目描述 Write an algorithm to determine if a…

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 字典 日期 题目地址:https://leetcode-cn.com/problems/strobogrammatic-number/ 题目描述 A strobogrammatic number is a number that looks the same when rotated 180 degrees (looked at upside down…

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 字典 日期 题目地址:https://leetcode-cn.com/problems/confusing-number/ 题目描述 Given a number N, return true if and only if it is a confusing number, which satisfies the following condition…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目大意 解题方法 Java解法 Python解法 日期 [LeetCode] 题目地址:https://leetcode.com/problems/excel-sheet-column-number/ Total Accepted: 77115 Total Submissions: 185238 Difficulty: Easy 题目大意 Given a column titl…

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 异或 字典 日期 [LeetCode] 题目地址:https://leetcode.com/problems/single-number/ Total Accepted: 183838 Total Submissions: 348610 Difficulty: Easy 题目描述 Given a non-empty array of integers…

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 直接计算 日期 题目地址:https://leetcode-cn.com/problems/check-if-a-number-is-majority-element-in-a-sorted-array/ 题目描述 The k-digit number N is an Armstrong number if and only if the k-th p…

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 桶排序 日期 题目地址:https://leetcode-cn.com/problems/check-if-a-number-is-majority-element-in-a-sorted-array/ 题目描述 Given an array of integers A`, return the largest integer that only oc…

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 动态规划 日期 题目地址:https://leetcode.com/problems/fibonacci-number/ 题目描述 The Fibonacci numbers, commonly denoted F(n) form a sequence, called the Fibonacci sequence, such that each nu…

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 数学 日期 题目地址:https://leetcode.com/problems/reach-a-number/description/ 题目描述 You are standing at position 0 on an infinite number line. There is a goal at position target. On each…

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/perfect-number/#/description 题目描述 We define the Perfect Number is a positive integer that is equal to the sum of all its positive divisors…

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 替换最大值数组 使用set 三个变量 日期 题目地址:https://leetcode.com/problems/third-maximum-number/description/ 题目描述 Given a non-empty array of integers, return the third maximum number in this arr…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/valid-triangle-number/description/ 题目描述: Given an array consists of non-negative integers, your task is to count the number of triplets chosen from the array t…

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 保存已经访问过的数字 链表成环 二分查找 日期 题目地址:https://leetcode.com/problems/find-the-duplicate-number/description/ 题目描述 Given an array nums containing n + 1 integers where each integer is betwe…

原题地址: https://oj.leetcode.com/problems/largest-number/ 题目内容: Given a list of non negative integers, arrange them such that they form the largest number. For example, given [3, 30, 34, 5, 9], the largest formed number is 9534330. Note: The result may…

题目 题目描述 在一个农场里面,每一头牛都有一个数字编号,但是现在这些牛不喜欢这种编号,它们想把这些数字编号转化成为可以接受的字母的形式.数字与字母的转换表如下: 2: A,B,C 5: J,K,L 8: T,U,V 3: D,E,F 6: M,N,O 9: W,X,Y 4: G,H,I 7: P,R,S 每一个数字可以对应三个字母.但是并不是每一种由数字转化成的名字都被牛所接受,这些牛所能接受的名字在一个叫做dict.txt文件中.产生出来的名字,如果也存在于这个可接受的名字文件中,那么就表示…

题目要求 Given a column title as appear in an Excel sheet, return its corresponding column number. For example: A -> 1 B -> 2 C -> 3 ... Z -> 26 AA -> 27 AB -> 28 ... 题目分析及思路 给出excel表格中的列标题,要求返回对应的列数字(正如例子所示).其实这相当于一个进制问题,逢27进一.可以遍历字符串中的每个字符…

Largest Number Given a list of non negative integers, arrange them such that they form the largest number. For example, given [3, 30, 34, 5, 9], the largest formed number is 9534330. Note: The result may be very large, so you need to return a string…

题目要求 The Fibonacci numbers, commonly denoted F(n) form a sequence, called the Fibonacci sequence, such that each number is the sum of the two preceding ones, starting from 0 and 1. That is, F(0) = 0,   F(1) = 1​ F(N) = F(N - 1) + F(N - 2), for N > 1.…

Majority Number 原题链接:http://lintcode.com/en/problem/majority-number/# Given an array of integers, the majority number is the number that occurs more than half of the size of the array. Find it. Example For [1, 1, 1, 1, 2, 2, 2], return 1 Challenge O(…

Letter Combinations of a Phone Number Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below. Input:Digit string "23"Output…

Valid NumberValidate if a given string is numeric. Some examples:"0" => true" 0.1 " => true"abc" => false"1 a" => false"2e10" => trueNote: It is intended for the problem statement to be ambi…

number 题目描述 给定整数 \(m,k\),求出正整数 \(n\) 使得 \(n+1,n+2,-,2n\) 中恰好有 \(m\) 个数在二进制下恰好有 \(k\) 个 \(1\). 有多组数据. 输入数据 第一行一个整数 \(t\) 表示数据组数.接下来 \(t\) 行每行两个整数 \(m\),\(k\). 输出数据 每组数据输出一行两个整数,第一个数表示 \(long \ long\) 范围内任意一个满足条件的 \(n\),第二个数表示满足条件的 \(n\) 的个数(无穷多用\(-1\)…

原题链接:Largest Number 题目描述: Given a list of non negative integers, arrange them such that they form the largest number. For example, given [3, 30, 34, 5, 9], the largest formed number is 9534330. Note: The result may be very large, so you need to retur…

UVA1185 Big Number In many applications very large integers numbers are required. Some of these applications are using keys for secure transmission of data, encryption, etc. In this problem you are given a number, you have to determine the number of…