停止刷题已经三周了,有些想念.最近总算完成了公司代码的重构,于是要继续开始学习算法. 先来看leetcode上面第268题: Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example,Given nums = [0, 1, 3] return 2. Note:Your algorithm shou…

Missing number Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) [Problem Description] There is a permutation without two numbers in it, and now you know what numbers the permutation has. Please find the two numbers…

268. Missing Number Total Accepted: 31740 Total Submissions: 83547 Difficulty: Medium Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example, Given nums = [0, 1, 3] return 2.…

数学题 172. Factorial Trailing Zeroes Given an integer n, return the number of trailing zeroes in n!. Note: Your solution should be in logarithmic time complexity. (Easy) 分析:求n的阶乘中末位0的个数,也就是求n!中因数5的个数(2比5多),简单思路是遍历一遍,对于每个数,以此除以5求其因数5的个数,但会超时. 考虑到一个数n比他小…

#268.  Missing Number Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example, Given nums = [0, 1, 3] return 2. Note: Your algorithm should run in linear runtime complexity. Co…

Missing number 题目: Description There is a permutation without two numbers in it, and now you know what numbers the permutation has. Please find the two numbers it lose.   Input There is a number T shows there are T test cases below. (T≤10) For each t…

Missing Number Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example,Given nums = [0, 1, 3] return 2. Note:Your algorithm should run in linear runtime complexity. Could you i…

题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5166 Missing number Description There is a permutation without two numbers in it, and now you know what numbers the permutation has. Please find the two numbers it lose. Input There is a number T shows t…

268. Missing Number Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example,Given nums = [0, 1, 3] return 2. Note:Your algorithm should run in linear runtime complexity. Could…

Given an array of size n-1 and given that there are numbers from 1 to n with one missing, the missing number is to be found. Input: The first line of input contains an integer T denoting the number of test cases.The first line of each test case is N.…