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 using only constant extra spa...
Your algorithm should run in linear runtime complexity. Could you implement it using only constant extra space complexity? 给定一个容量为n的数组,里面包含从0, 1, 2, ..., n,找出丢失的数字。利用XOR数组中的每一个数,然后让这个结果遍历数字0~n即得到丢失的数。 classSolution {public:intmissingNum...
To check if a missing number lies in range 1 tonor not, mark array elements as negative by using array elements as indexes. For each array elementarr[i], get the absolute value of elementabs(arr[i])and make the element at indexabs(arr[i])-1negative. Finally, traverse the array again...
268. Missing Number 题目 Given an array containing n distinct numbers taken from0, 1, 2, ..., n, find the one that is missing from the array. Example 1: AI检测代码解析 Input: [3,0,1] Output: 2 Example 2: AI检测代码解析 Input: [9,6,4,2,3,5,7,0,1] Output: 8 Note:Your ...
fun missingNumber(nums: IntArray): Int { var xor = 0 val size = nums.size for (i in 0 until size) { xor = xor xor nums[i] } for (i in 0..size) { xor = xor xor i } return xor } } 时间复杂度:O(n),其中n是数组nums的长度。需要对2n + 1个数字计算按位异或的结果。
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leetcode 268. Missing Number Given an array containingndistinct numbers taken from0, 1, 2, ..., n, find the one that is missing from the array. Example 1 Input: [3,0,1] Output: 2 1. 2. Example 2 Input: [9,6,4,2,3,5,7,0,1]...
Missing Number Given an array containing n distinct numbers taken from 0, 1, 2, …, n, find the one that is missing from the array. 题目解析:给定一个数组,求解这个数组中丢失了哪个数字 思路: 1、 利用异或方法来求解这道题目,异或的性质是:两个相同的数异或结果为0,两个不同的数异或结......
XOR all the elements presented in the array. Let the result be x. XOR all numbers from 1 to n. Let the result be y. XORing x & y gives the missing number. C Implementation: Program to find the missing number#include <stdio.h> #include <stdlib.h> int missingNo(int* a, int n...
Leetcode 268: Missing Number 问题描述: Given an array nums containing n distinct numbers in the range [0, n], return the only number in the range that is missing from the array. Follow up: Could you implement a solution using only O(......