Given an integers array A. Define B[i] = A[0] * ... * A[i-1] * A[i+1] * ... * A[n-1], calculate B without divide operation. Example For A=[1, 2, 3], B is [6, 3, 2] 非常典型的Forward-Backward Traversal 方法: 但是第一次做的时候还是忽略了一些问题:比如A.size()==1时,答案应该是空[] public…

Given an integers array A. Define B[i] = A[0] * ... * A[i-1] * A[i+1] * ... * A[n-1], calculate B WITHOUT divide operation. Have you met this question in a real interview? Yes Example For A = [1, 2, 3], return [6, 3, 2]. LeetCode上的原题,请参见我之前的博客Product…

Given an integers array A. Define B[i] = A[0] * ... * A[i-1] * A[i+1] * ... * A[n-1], calculate B WITHOUT divide operation. Example For A = [1, 2, 3], return [6, 3, 2]. 分析: 其实这题的限制条件挺脑残的,但是感觉实现的方式还是可以用在其它地方的. public class Solution { public int[] prod…

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 Total Accepted: 26470 Total Submissions: 66930 Difficulty: Medium 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 numsexcept nums[i…

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…

    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. Product of Array Except Self     Total Accepted: 41565 Total Submissions: 97898 Difficulty: Medium 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 exc…

LintCode 373: Partition Array 题目描述 分割一个整数数组,使得奇数在前偶数在后. 样例 给定[1, 2, 3, 4],返回[1, 3, 2, 4]. Thu Feb 23 2017 思路 简单题,可以很自然地想到再用一个答案数组,从头到尾遍历一遍,遇到奇数就放到答案数组的前面,遇到偶数就放到答案数组的后面. 还有另一种方法,跟快速排序的形式有点像,即从前面找到一个偶数,同时从后面找到一个奇数,将两个数调换. 虽然两种方法的时间复杂度都是\(O(n)\),但是第二种方…

转载请注明出处:z_zhaojun的博客 原文地址 题目地址 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 i…