Given an array contains N numbers of 0 .. N, find which number doesn't exist in the array. Example Given N = 3 and the array [0, 1, 3], return 2. Challenge Do it in-place with O(1) extra memory and O(n) time. 这道题是LeetCode上的原题,请参见我之前的博客Missing Number…

题目: Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. Example 1: Input: [3,0,1] Output: 2 Example 2: Input: [9,6,4,2,3,5,7,0,1] Output: 8 Note:Your algorithm should run in linear run…

据传说是MS/Google等等IT名企业的面试题: 有一组数字,从1到n,中减少了一个数,顺序也被打乱,放在一个n-1的数组里 请找出丢失的数字,最好能有程序,最好算法比较快 BTW1: 有很多种方法的哦,据说O(n)的方法就不止一种 BTW2: 扩展问题,如果丢失了2个数字呢? BTW3: 一定要小心不要溢出,嗯,面试者有时候不会提醒你的 BTW4: 最好不要多申请n多空间 Update 一个很相近的题目:1-1000放在含有1001个元素的数组中,只有唯一的一个元素值重复,其它均只出现一次.…

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…

http://www.lintcode.com/en/problem/find-the-missing-number/# Find the Missing Number Given an array contains N numbers of 0 .. N, find which number doesn't exist in the array.   Example Given N = 3 and the array [0, 1, 3], return 2. Challenge Do it i…

#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 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…

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…

---Number类型的细节,其包含的基本数字类型 ---Number基本数字类型之间的数值转换 ---Number上面的数学函数,有些可以直接调用,有些需要导入库 参见http://www.runoob.com/python/python-numbers.html 扩充下面的笔记…

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.…

1144 The Missing Number (20 分)   Given N integers, you are supposed to find the smallest positive integer that is NOT in the given list. Input Specification: Each input file contains one test case. For each case, the first line gives a positive integ…

1144 The Missing Number(20 分) Given N integers, you are supposed to find the smallest positive integer that is NOT in the given list. Input Specification: Each input file contains one test case. For each case, the first line gives a positive integer…

1144 The Missing Number(20 分) Given N integers, you are supposed to find the smallest positive integer that is NOT in the given list. Input Specification: Each input file contains one test case. For each case, the first line gives a positive integer…

Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. 原题地址: Missing Number 难度: Easy 题意: 存在一个长度为n的数组,其中数值包括在[0, n]之中,返回缺少的那个数 思路1: (1)类似217. Contains Duplicate@python,采用正负计数方式,将数组中的值与数组索引…

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.…

Source: PAT A1144 The Missing Number (20 分) Description: Given N integers, you are supposed to find the smallest positive integer that is NOT in the given list. Input Specification: Each input file contains one test case. For each case, the first lin…

1144 The Missing Number (20 分)   Given N integers, you are supposed to find the smallest positive integer that is NOT in the given list. Input Specification: Each input file contains one test case. For each case, the first line gives a positive integ…

题目链接:1144 The Missing Number (20 point(s)) Description Given N integers, you are supposed to find the smallest positive integer that is NOT in the given list. Input Specification Each input file contains one test case. For each case, the first line g…

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…

The Missing Number PAT-1144 #include<iostream> #include<cstring> #include<string> #include<algorithm> #include<cstdio> #include<sstream> #include<set> using namespace std; const int maxn=100005; set<int>se;…

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 implement it u…

转载:http://www.cnblogs.com/grandyang/p/4756677.html 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 li…

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 implement it usi…

Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. Example 1: Input: [3,0,1] Output: 2 Example 2: Input: [9,6,4,2,3,5,7,0,1] Output: 8 Note:Your algorithm should run in linear runtime…

［抄题］: Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. Example 1 Input: [3,0,1] Output: 2 Example 2 Input: [9,6,4,2,3,5,7,0,1] Output: 8 [暴力解法]: 时间分析: 空间分析: [优化后]: 时间分析: 空间分析: ［奇葩输出…

Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. Example 1 Input: [3,0,1] Output: 2 Example 2 Input: [9,6,4,2,3,5,7,0,1] Output: 8 Note:Your algorithm should run in linear runtime c…

Validate if a given string is numeric. Have you met this question in a real interview? Yes Example "0" => true " 0.1 " => true "abc" => false "1 a" => false "2e10" => true LeetCode上的原题,请参见我之…

题目 寻找缺失的数 给出一个包含 0 .. N 中 N 个数的序列,找出0 .. N 中没有出现在序列中的那个数. 样例 N = 4 且序列为 [0, 1, 3] 时,缺失的数为2. 注意 可以改变序列中数的位置. 挑战 在数组上原地完成,使用O(1)的额外空间和O(N)的时间. 解题 重新定义一个数组存放排序后的数,空间复杂度和时间复杂度都是O(N) public class Solution { /** * @param nums: an array of integers * @retur…