Can someone explain the optimal solution for finding the sum of XOR of all sub-arrays of the array. Example: Input : arr[] = {3, 8, 13} Output : 46 XOR of {3} = 3 XOR of {3, 8} = 11 XOR of {3, 8, 13} = 6 XOR of {8} = 8 XOR of {8, 13} = 5 XOR of {13}...
Can you solve this real interview question? Sum of Subarray Minimums - Given an array of integers arr, find the sum of min(b), where b ranges over every (contiguous) subarray of arr. Since the answer may be large, return the answer modulo 109 + 7. Ex
Can you solve this real interview question? Maximum Sum of Two Non-Overlapping Subarrays - Given an integer array nums and two integers firstLen and secondLen, return the maximum sum of elements in two non-overlapping subarrays with lengths firstLen and
代码class Solution: def sumOddLengthSubarrays(self, arr: List[int]) -> int: subarraylen = 1 rat = 0 while len(arr) >= subarraylen: for i in range(0, len(arr) - subarraylen + 1): rat += sum(arr[i:i + subarraylen]) subarraylen += 2 return rat分类: LeetCode 标签: Array ...
【leetcode】907. Sum of Subarray Minimums 题目如下: 解题思路:我的想法对于数组中任意一个元素,找出其左右两边最近的小于自己的元素。例如[1,3,2,4,5,1],元素2左边比自己小的元素是1,那么大于自己的区间就是[3],右边的区间就是[4,5]。那么对于元素2来说,和左边区间合并组成[2,3]以及和右边区间合并...
package leetcode // 解法一 最快的解是 DP + 单调栈 func sumSubarrayMins(A []int) int { stack, dp, res, mod := []int{}, make([]int, len(A)+1), 0, 1000000007 stack = append(stack, -1) for i := 0; i < len(A); i++ { for stack[len(stack)-1] != -1 && A[i]...
LeetCode-Binary Subarrays With Sum Description: In an array A of 0s and 1s, how many non-empty subarrays have sum S? Example 1: Input: A = [1,0,1,0,1], S = 2 Output: 4 Explanation: The 4 subarrays are bolded below:
每天一算:Minimum Size Subarray Sum leetcode上第209号问题:Minimum Size Subarray Sum 给定一个含有 n 个正整数的数组和一个正整数 s ,找出该数组中满足其和 ≥ s 的长度最小的连续子数组。如果不存在符合条件的连续子数组,返回 0。 示例: 输入: s = 7, nums = [2,3,1,2,4,3]...
3011. 判断一个数组是否可以变为有序 Find if Array Can Be Sorted 力扣 LeetCode 题解 07:02 2974. 最小数字游戏 Minimum Number Game 力扣 LeetCode 题解 02:29 2972. 统计移除递增子数组的数目 II Count the Number of Incremovable Subarrays 力扣 LeetCode 题解 12:00 2970. 统计移除递增子数组...
Given a 0-indexed integer array nums, determine whether there exist two subarrays of length 2 with equal sum. Note that the two subarrays must begin at different indices.Return true if these subarrays exist, and false otherwise.A subarray is a contiguous