Given an array of n integers where n > 1, nums, return an array output such that output[i] is equal to the product of all the elements of nums except nums[i]. Solve it without division and in O(n). For example, given [1,2,3,4], return [24,12,8,6]. Fo…

Description: Given an array of n integers where n > 1, nums, return an array output such that output[i] is equal to the product of all the elements of nums except nums[i]. Solve it without division and in O(n). For example, given [1,2,3,4], return [2…

Given an array nums of n integers where n > 1,  return an array output such that output[i] is equal to the product of all the elements of nums except nums[i]. Example: Input: [1,2,3,4] Output: [24,12,8,6] Note: Please solve it without division and in…

Question: Given an array of n integers where n > 1, nums, return an array output such that output[i] is equal to the product of all the elements of nums except nums[i]. Solve it without division and in O(n). For example, given [1,2,3,4], return [24,1…

Dynamic Programming public class Solution { public int[] productExceptSelf(int[] nums) { int[] ans = new int[nums.length]; for (int i = 0; i < ans.length; i++) ans[i] = 1; int product = 1; for (int i = 1; i < ans.length; i++) { product *= nums[i-1];…

题意:给一个序列nums,要求返回一个序列ans,两序列元素个数相同,ans第i个元素就是除了nums[i]之外所有的数相乘之积. 思路:时间O(n),额外空间O(0). 第一次扫一遍,处理nums[0~i-1]的积作为ans[i],这样的ans[i]就得到了i之前所有数之积,那么只剩下i后面所有数之积. 第二次从后往前扫,跟第一次的做法一样,但是这次得开个临时变量存储积了. class Solution { public: vector<int> productExceptSelf(vect…

    题目链接:https://leetcode.com/problems/product-of-array-except-self/ 238. Product of Array Except Self My Submissions Question Total Accepted: 36393 Total Submissions: 87262 Difficulty: Medium Given an array of n integers where n > 1, nums, return an…

238. 除自身以外数组的乘积 238. Product of Array Except Self 题目描述 LeetCode LeetCode238. Product of Array Except Self中等 Java 实现 class Solution { public int[] productExceptSelf(int[] nums) { int n = nums.length; int[] before = new int[n], after = new int[n], res…

Product of Array Except Self Given an array of n integers where n > 1, nums, return an array output such that output[i] is equal to the product of all the elements of nums except nums[i]. Solve it without division and in O(n). For example, given [1,2…

Product of Array Except Self Given an array of n integers where n > 1, nums, return an array output such that output[i] is equal to the product of all the elements of nums except nums[i]. Solve it without division and in O(n). For example, given [1,2…