LeetCode 396. Rotate Function

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LeetCode 396. Rotate Function

Given an array of integers A and let n to be its length. Assume Bk to be an array obtained by rotating the array A k positions clock-wise, we define a "rotation function" F on A as follow: F(k) = 0 * Bk[0] + 1 * Bk[1] + ... + (n-1) * Bk[n-1]. Ca…

【LeetCode】396. Rotate Function 解题报告（Python）

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/rotate-function/description/ 题目描述: Given an array of integers A and let n to be its length. Assume Bk to be an array obtained by rotating the array A k positio…

【leetcode❤python】 396. Rotate Function

#-*- coding: UTF-8 -*- #超时# lenA=len(A)# maxSum=[]# count=0# while count<lenA:# tmpSum=0# for i in xrange(lenA):# tmpSum+=i*A[i-count]# maxSum.append(tmpSum)# coun…

396. Rotate Function 移动加权求和，取最大值

［抄题］: Given an array of integers A and let n to be its length. Assume Bk to be an array obtained by rotating the array A k positions clock-wise, we define a "rotation function" F on A as follow: F(k) = 0 * Bk[0] + 1 * Bk[1] + ... + (n-1) * Bk[n-…

396 Rotate Function 旋转函数

给定一个长度为 n 的整数数组 A .假设 Bk 是数组 A 顺时针旋转 k 个位置后的数组,我们定义 A 的“旋转函数” F 为:F(k) = 0 * Bk[0] + 1 * Bk[1] + ... + (n-1) * Bk[n-1].计算F(0), F(1), ..., F(n-1)中的最大值.注意:可以认为 n 的值小于 105.示例:A = [4, 3, 2, 6]F(0) = (0 * 4) + (1 * 3) + (2 * 2) + (3 * 6) = 0 + 3 + 4 + 18…

396. Rotate Function

一开始没察觉到0123 3012 2301 而不是 0123 1230 2301 的原因,所以也没找到规律,一怒之下brute-force.. public int maxRotateFunction(int[] A) { if(A.length == 0) return 0; int res = Integer.MIN_VALUE; for(int i = 0; i < A.length;i++) { int temp = 0; for(int j = i,total = 0; total <…

[array] leetcode - 48. Rotate Image - Medium

leetcode - 48. Rotate Image - Medium descrition You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Note: You have to rotate the image in-place, which means you have to modify the input 2D matrix direct…